TypeError

TypeError represents an error when an operation could not be performed in many programming language(such as Python, JavaScript), typically (but not exclusively) when a value is not of the expected type.

TypeError represents an error when an operation could not be performed in many programming language(such as Python, JavaScript), typically (but not exclusively) when a value is not of the expected type.

Learn more

Documentations

Discover trending open-source projects and their API documentations in a fast, organized, and searchable way
Angular 10
Angular 9
Angular 8
Angular 7
Angular 6
Angular 5
Angular 4
Angular 2
Angular.js 1.8
Angular.js 1.7
Angular.js 1.6
Angular.js 1.5
Angular.js 1.4
Angular.js 1.3
Angular.js 1.2
Ansible
Ansible 2.11
Ansible 2.10
Ansible 2.9
Ansible 2.8
Ansible 2.7
Ansible 2.6
Ansible 2.5
Ansible 2.4
Apache HTTP Server
Apache Pig 0.17
Apache Pig 0.16
Apache Pig 0.15
Apache Pig 0.14
Apache Pig 0.13
Async
Babel 7
Babel 6
Backbone.js
Bash
Bluebird
Bootstrap 5
Bootstrap 4
Bootstrap 3
Bottle 0.12
Bottle 0.11
Bower
C
C++
CakePHP 4.1
CakePHP 4.0
CakePHP 3.9
CakePHP 3.8
CakePHP 3.7
CakePHP 3.6
CakePHP 3.5
CakePHP 3.4
CakePHP 3.3
CakePHP 3.2
CakePHP 3.1
CakePHP 2.10
CakePHP 2.9
CakePHP 2.8
CakePHP 2.7
Chai
Chef 16
Chef 12
Chef 11
Clojure 1.10
Clojure 1.9
Clojure 1.8
Clojure 1.7
CMake 3.21
CMake 3.20
CMake 3.19
CMake 3.18
CMake 3.17
CMake 3.16
CMake 3.15
CMake 3.14
CMake 3.13
CMake 3.12
CMake 3.11
CMake 3.10
CMake 3.9
CMake 3.8
CMake 3.7
CMake 3.6
CMake 3.5
Codeception
CodeceptJS
CodeIgniter 4
CodeIgniter 3
CoffeeScript 2
CoffeeScript 1
Composer
Cordova 9
Cordova 8
Cordova 7
Cordova 6
Crystal
CSS
Cypress
D
D3.js 6
D3.js 5
D3.js 4
D3.js 3
Dart 2
Dart 1
Django 3.2
Django 3.1
Django 3.0
Django 2.2
Django 2.1
Django 2.0
Django 1.11
Django 1.10
Django 1.9
Django 1.8
Django REST Framework
Docker 19
Docker 18
Docker 17
Docker 1.13
Docker 1.12
Docker 1.11
Docker 1.10
Dojo
DOM
Drupal 8
Drupal 7
Electron
Elisp
Elixir 1.12
Elixir 1.11
Elixir 1.10
Elixir 1.9
Elixir 1.8
Elixir 1.7
Elixir 1.6
Elixir 1.5
Elixir 1.4
Elixir 1.3
Ember.js 3
Ember.js 2
Enzyme
Erlang 24
Erlang 23
Erlang 22
Erlang 21
Erlang 20
Erlang 19
Erlang 18
ESLint
Express
Falcon 2.0
Falcon 1.4
Falcon 1.3
Falcon 1.2
Fish 3.3
Fish 3.2
Fish 3.1
Fish 3.0
Fish 2.7
Fish 2.6
Fish 2.5
Fish 2.4
Fish 2.3
Fish 2.2
Flask 2.0
Flask 1.1
Flask 1.0
Flask 0.12
Flow
GCC 11
GCC 11 CPP
GCC 10
GCC 10 CPP
GCC 9
GCC 9 CPP
GCC 8
GCC 8 CPP
GCC 7
GCC 7 CPP
GCC 6
GCC 6 CPP
GCC 5
GCC 5 CPP
GCC 4
GCC 4 CPP
Git
GNU Fortran 11
GNU Fortran 10
GNU Fortran 9
GNU Fortran 8
GNU Fortran 7
GNU Fortran 6
GNU Fortran 5
GNU Fortran 4
GnuCOBOL
Gnuplot
Go
Godot 3.3
Godot 3.2
Godot 2.1
Graphite
Groovy 3.0
Groovy 2.5
Groovy 2.4
Grunt
GTK 4.0
GTK 3.24
GTK 3.22
GTK 3.20
Handlebars.js
HAProxy 2.4
HAProxy 2.3
HAProxy 2.2
HAProxy 2.1
HAProxy 2.0
HAProxy 1.9
HAProxy 1.8
HAProxy 1.7
Haskell 8
Haskell 7
Haxe
Haxe C++
Haxe C#
Haxe Flash
Haxe Java
Haxe JavaScript
Haxe Neko
Haxe PHP
Haxe Lua
Haxe HashLink
Haxe Sys
Haxe Python
Haxe Eval
Homebrew
HTML
HTTP
Immutable.js
InfluxData
Jasmine
JavaScript
Jekyll 4
Jekyll 3
Jest
Jinja 3.0
Jinja 2.11
Jinja 2.10
Jinja 2.9
jq
jQuery
jQuery Mobile
jQuery UI
JSDoc
Julia 1.6
Julia 1.5
Julia 1.4
Julia 1.3
Julia 1.2
Julia 1.1
Julia 1.0
Julia 0.7
Julia 0.6
Julia 0.5
Knockout.js
Koa
Kotlin 1.6
Kotlin 1.4
Laravel 8
Laravel 7
Laravel 6
Laravel 5.8
Laravel 5.7
Laravel 5.6
Laravel 5.5
Laravel 5.4
Laravel 5.3
Laravel 5.2
Laravel 5.1
Laravel 4.2
LaTeX
Leaflet 1.7
Leaflet 1.6
Leaflet 1.5
Leaflet 1.4
Leaflet 1.3
Leaflet 1.2
Leaflet 1.1
Leaflet 1.0
Less 4
Less 3
Less 2
Liquid
lodash 4
lodash 3
lodash 2
Lua 5.4
Lua 5.3
Lua 5.2
Lua 5.1
LÖVE
MariaDB
Marionette.js 4
Marionette.js 3
Marionette.js 2
Markdown
Matplotlib 3.4
Matplotlib 3.3
Matplotlib 3.2
Matplotlib 3.1
Matplotlib 3.0
Matplotlib 2.2
Matplotlib 2.1
Matplotlib 2.0
Matplotlib 1.5
Meteor 1.5
Meteor 1.4
Meteor 1.3
Mocha
Modernizr
Moment.js
Mongoose
nginx
nginx / Lua Module
Nim
Node.js
Node.js 14 LTS
Node.js 12 LTS
Node.js 10 LTS
Node.js 8 LTS
Node.js 6 LTS
Node.js 4 LTS
Nokogiri
npm
NumPy 1.21
NumPy 1.20
NumPy 1.19
NumPy 1.18
NumPy 1.17
NumPy 1.16
NumPy 1.15
NumPy 1.14
NumPy 1.13
NumPy 1.12
NumPy 1.11
NumPy 1.10
OCaml
Octave 6
Octave 5
OpenJDK 17
OpenJDK 11
OpenJDK 8
OpenJDK 8 GUI
OpenJDK 8 Web
OpenTSDB
Padrino
pandas 1
pandas 0.25
pandas 0.24
pandas 0.23
pandas 0.22
pandas 0.21
pandas 0.20
pandas 0.19
pandas 0.18
Perl 5.34
Perl 5.32
Perl 5.30
Perl 5.28
Perl 5.26
Perl 5.24
Perl 5.22
Perl 5.20
Phalcon 3
Phalcon 2
Phaser
Phoenix
PHP
PHPUnit 9
PHPUnit 8
PHPUnit 6
PHPUnit 5
PHPUnit 4
Pony
PostgreSQL 14
PostgreSQL 13
PostgreSQL 12
PostgreSQL 11
PostgreSQL 10
PostgreSQL 9.6
PostgreSQL 9.5
PostgreSQL 9.4
Pug
Puppeteer
Pygame
Python 3.10
Python 3.9
Python 3.8
Python 3.7
Python 3.6
Python 3.5
Python 2.7
PyTorch
Q
Qt 6.1
Qt 6.0
Qt 5.15
Qt 5.14
Qt 5.13
Qt 5.12
Qt 5.11
Qt 5.9
Qt 5.6
R
Ramda
React
React Bootstrap
ReactiveX
ReactNative
Redis
Redux
Redux 3
Relay 10
Relay 9
Relay 8
RequireJS
RethinkDB javascript
RethinkDB ruby
RethinkDB python
RethinkDB java
Ruby 3
Ruby 2.7
Ruby 2.6
Ruby 2.5
Ruby 2.4
Ruby 2.3
Ruby 2.2
Ruby / Minitest
Ruby on Rails 6.1
Ruby on Rails 6.0
Ruby on Rails 5.2
Ruby on Rails 5.1
Ruby on Rails 5.0
Ruby on Rails 4.2
Ruby on Rails 4.1
Rust
RxJS
SaltStack
Sass
Scala 2.13 Library
Scala 2.13 Reflection
Scala 2.12 Library
Scala 2.12 Reflection
scikit-image
scikit-learn
Sequelize 6
Sequelize 5
Sequelize 4
Sinon.JS 11
Sinon.JS 10
Sinon.JS 9
Sinon.JS 8
Sinon.JS 7
Sinon.JS 6
Sinon.JS 5
Sinon.JS 4
Sinon.JS 3
Sinon.JS 2
Sinon.JS 1
Socket.IO 4
Socket.IO 3
Socket.IO 2
Spring Boot
SQLite
Statsmodels
Support Tables
SVG
Symfony 4.1
Symfony 4.0
Symfony 3.4
Symfony 3.3
Symfony 3.2
Symfony 3.1
Symfony 3.0
Symfony 2.8
Symfony 2.7
Tcl/Tk
TensorFlow 2.4
TensorFlow 2.3
TensorFlow 1.15
TensorFlow C++ 2.4
TensorFlow C++ 2.3
TensorFlow C++ 1.15
Terraform
Trio
Twig 3
Twig 2
Twig 1
TypeScript
Underscore.js
Vagrant
Vue Router 4
Vue Router 3
Vue.js 3
Vue.js 2
Vue.js 1
Vuex 4
Vuex 3
Vulkan
Web Extensions
webpack 5
webpack 4
webpack 1
Werkzeug 2.0
Werkzeug 1.0
Werkzeug 0.16
Werkzeug 0.15
WordPress
XSLT & XPath
Yarn
Yii 2.0
Yii 1.1