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Reza Lavarian

Hey 👋 I'm a software engineer, an author, and an open-source contributor. I enjoy helping people (including myself) decode the complex side of technology.

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JavaScript list (array) comprehension explained with examples
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JavaScript list (array) comprehension explained with examples

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How to fix “ValueError: I/O operation on closed file” in Python
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How to fix “ValueError: I/O operation on closed file” in Python

#python #programming #tutorial #beginners
4
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3 min read
Four ways to check if a variable is a string in JavaScript (with examples)
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Four ways to check if a variable is a string in JavaScript (with examples)

#beginners #tutorial #programming #javascript
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Python __new__() method explained with examples
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Python __new__() method explained with examples

#python #programming #beginners
3
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Label htmlFor Property Explained
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Label htmlFor Property Explained

#javascript #webdev #beginners
2
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About “ReferenceError: document is not defined” in JavaScript
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About “ReferenceError: document is not defined” in JavaScript

#javascript #webdev #beginners
7
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About "SyntaxError: Unexpected end of JSON input" in JavaScript
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About "SyntaxError: Unexpected end of JSON input" in JavaScript

#design #uidesign #productivity #coding
7
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Add commas to numbers in JavaScript (Explained with examples)
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Add commas to numbers in JavaScript (Explained with examples)

#discuss #network #webdev #softwaredevelopment
10
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3 min read
How to remove the last character from a string in PHP
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How to remove the last character from a string in PHP

#contentwriting #career #writing #opensource
3
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About "TypeError: map is not a function" in JavaScript
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About "TypeError: map is not a function" in JavaScript

#devto #announcement #offers
20
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PHP double question marks (Null coalescing operator) explained
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PHP double question marks (Null coalescing operator) explained

#announcement #devto #community #offers
5
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How to Flatten an array in PHP (four methods)
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How to Flatten an array in PHP (four methods)

#announcement #devto #community
12
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PHP replace space with dash explained with examples
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PHP replace space with dash explained with examples

#webdev #beginners #php
1
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Integer division in JavaScript explained
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Integer division in JavaScript explained

#devto #web3 #cryptocurrency #announcement
4
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JavaScript isset Equivalent (3 methods)
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JavaScript isset Equivalent (3 methods)

#devto #webmonetization #announcement #community
5
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How to check if an element exists in JavaScript (with examples)
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How to check if an element exists in JavaScript (with examples)

#devto #community #announcement
17
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3 min read
Get viewport width and height in JavaScript (with examples)
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Get viewport width and height in JavaScript (with examples)

#devto #offers #announcement
9
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2 min read
About “__dirname is not defined in ES module scope” in JavaScript
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About “__dirname is not defined in ES module scope” in JavaScript

#devto #web3 #blockchain #crypto
3
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2 min read
How to get yesterday’s date in JavaScript without a library
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How to get yesterday’s date in JavaScript without a library

#announcement #devto #web3 #blockchain
4
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2 min read
How to add days to a date in JavaScript (without a library)
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How to add days to a date in JavaScript (without a library)

#announcement #devto #contributorswanted
7
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3 min read
Subtract days from a date in JavaScript without a library
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Subtract days from a date in JavaScript without a library

#devto #announcement #opensource
6
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3 min read
Get the day of the week in JavaScript without a library
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Get the day of the week in JavaScript without a library

#web3 #cryptocurrency #blockchain #devto
5
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3 min read
JavaScript double exclamation mark explained (with examples)
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JavaScript double exclamation mark explained (with examples)

#devto #offers #web3
14
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Javascript if/else shorthand explained (with common uses cases)
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Javascript if/else shorthand explained (with common uses cases)

#announcement #devto #blockchain #web3
6
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About "Cannot use import statement outside a module" in JavaScript
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About "Cannot use import statement outside a module" in JavaScript

#announcement #devto #web3 #crypto
2
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3 min read
About "‘str’ object has no attribute ‘decode’" error in Python
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About "‘str’ object has no attribute ‘decode’" error in Python

#discuss #career #productivity
4
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About "getElementById is not a function" in JavaScript
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About "getElementById is not a function" in JavaScript

#discuss
4
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3 min read
Convert a dd/mm/yyyy string to a Date object in JavaScript
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Convert a dd/mm/yyyy string to a Date object in JavaScript

#devto #devrel #offers #community
10
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About "Await is only valid in Async functions" error in JavaScript
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About "Await is only valid in Async functions" error in JavaScript

#web3 #crypto #blockchain #community
4
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5 min read
About "AttributeError module ‘DateTime’ has no attribute ‘strptime’" in Python
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About "AttributeError module ‘DateTime’ has no attribute ‘strptime’" in Python

#devto #web3 #cryptocurrency #announcement
13
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About "Unindent does not match any outer indentation level" error in Python
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About "Unindent does not match any outer indentation level" error in Python

#announcement #devto #web3 #blockchain
2
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About "missing 1 required positional argument: ‘self’" in Python
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About "missing 1 required positional argument: ‘self’" in Python

#web3 #cryptocurrency #blockchain #devto
80
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How to reverse a range in Python (with examples)
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How to reverse a range in Python (with examples)

#devto #announcement #crypto #web3
2
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About "TypeError: unhashable type: ‘dict'” in Python
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About "TypeError: unhashable type: ‘dict'” in Python

#devrel #community #devto #announcement
6
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On "TabError: inconsistent use of tabs and spaces in indentation" in Python
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On "TabError: inconsistent use of tabs and spaces in indentation" in Python

#devrel #devto #announcement #community
12
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About "Not all arguments converted during string formatting" error in Python
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About "Not all arguments converted during string formatting" error in Python

#devto #announcement #community
3
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About "can only concatenate str (not “list”) to str" in Python
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About "can only concatenate str (not “list”) to str" in Python

#announcement #devto #web3 #community
2
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How to fix "can only concatenate str (not “dict”) to str" in Python
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How to fix "can only concatenate str (not “dict”) to str" in Python

#python #programming
2
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How to fix "can only concatenate str (not “bool”) to str" in Python
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How to fix "can only concatenate str (not “bool”) to str" in Python

#discuss #web3 #blockchain #ethereum
1
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How to fix "can only concatenate str (not “int”) to str" in Python
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How to fix "can only concatenate str (not “int”) to str" in Python

#python #programming
1
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About 'can only concatenate str (not “float”) to str' error in Python
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About 'can only concatenate str (not “float”) to str' error in Python

#python #programming
1
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How to fix “TypeError: ‘float’ object is not callable” in Python
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How to fix “TypeError: ‘float’ object is not callable” in Python

#python #programming
1
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How to fix "‘dict’ object is not callable" in Python
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How to fix "‘dict’ object is not callable" in Python

#python #programming
7
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How to fix "‘tuple’ object is not callable" in Python
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How to fix "‘tuple’ object is not callable" in Python

#discuss #ethereum #blockchain #crypto
2
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How to fix "‘bool’ object is not callable" in Python
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How to fix "‘bool’ object is not callable" in Python

#python #programming
4
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How to fix "SyntaxError: invalid decimal literal" in Python
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How to fix "SyntaxError: invalid decimal literal" in Python

#discuss #ai #productivity
8
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3 min read
How to fix "SyntaxError: ‘break’ outside loop" in Python
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How to fix "SyntaxError: ‘break’ outside loop" in Python

#web3 #cryptocurrency #offers
15
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How to fix "SyntaxError: ‘continue’ not properly in loop" in Python
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How to fix "SyntaxError: ‘continue’ not properly in loop" in Python

#crypto #cryptocurrency #airdrop #web3
2
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How to fix "SyntaxError: cannot assign to function call here" in Python
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How to fix "SyntaxError: cannot assign to function call here" in Python

#blockchain #crypto #web3 #offers
2
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How to fix "SyntaxError: cannot assign to literal here" in Python
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How to fix "SyntaxError: cannot assign to literal here" in Python

#crypto #blockchain #defi #web3
1
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How to fix "SyntaxError: cannot assign to expression here" in Python
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How to fix "SyntaxError: cannot assign to expression here" in Python

#blockchain #cryptocurrency #web3
6
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How to fix "SyntaxError: EOL while scanning string literal" in Python
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How to fix "SyntaxError: EOL while scanning string literal" in Python

#crypto #cryptocurrency #blockchain #web3
2
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How to fix "SyntaxError: unterminated string literal" in Python
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How to fix "SyntaxError: unterminated string literal" in Python

#python #syntaxerror #programming
13
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How to fix "SyntaxError: invalid character" in Python
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How to fix "SyntaxError: invalid character" in Python

#crypto #web3 #blockchain
4
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3 min read
how to fix "SyntaxError: invalid non-printable character" in Python
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how to fix "SyntaxError: invalid non-printable character" in Python

#crypto #web3 #blockchain #cryptocurrency
10
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How to fix "SyntaxError: Missing parentheses in call to ‘print’" in Python
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How to fix "SyntaxError: Missing parentheses in call to ‘print’" in Python

#api #tooling #learning #productivity
35
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How to fix "SyntaxError: positional argument follows keyword argument" in Python
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How to fix "SyntaxError: positional argument follows keyword argument" in Python

#web3 #cryptocurrency #blockchain
37
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[Solved] SyntaxError: ‘return’ outside function in Python
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[Solved] SyntaxError: ‘return’ outside function in Python

#python #syntaxerror #programming
3
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How to fix SyntaxError: unterminated triple-quoted string literal in Python
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How to fix SyntaxError: unterminated triple-quoted string literal in Python

#python #syntaxerror #programming
7
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Code Splitting with dynamic imports
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Code Splitting with dynamic imports

#javascript #performance #webdev #webpack
37
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