Tutorial by Topics

file, err := os.Open(name) // Opens a file in read-only mode. A non-nil error is returned if the file could not be opened. file, err := os.Create(name) // Creates or opens a file if it already exists in write-only mode. The file is overwritten to if it already exists. A non-nil error is returned...

JSON - Java Script Object Notation , Postgresql support JSON Data type since 9.2 version. There are some predefined function and operators to access the JSON data. The -> operator returns the key of JSON column. The ->> operator returns the value of JSON Column.

scikit-learn is a general-purpose open-source library for data analysis written in python. It is based on other python libraries: NumPy, SciPy, and matplotlib scikit-learncontains a number of implementation for different popular algorithms of machine learning.

D is a systems programming language with C-like syntax and static typing. It combines efficiency, control and modeling power with safety and programmer productivity. VersionChangelogRelease DateDhttp://www.digitalmars.com/d/1.0/changelog.html2007-01-23D2https://dlang.org/changelog/2.000.html20...

Java StringBuilder class is used to create mutable (modifiable) string. The Java StringBuilder class is same as StringBuffer class except that it is non-synchronized. It is available since JDK 1.5. new StringBuilder () new StringBuilder (int capacity) new StringBuilder (CharSequenc...

Implementations SWI-Prolog (free) swi-prolog Implemented in c SICStus (commercial) sicstus-prolog YAP (free) yap GNU Prolog (free) gnu-prolog XSB (free) xsb B (commercial) b-prolog IF (commercial) Ciao (free) Minerva (commercial) ECLiPSe-CLP (free) eclipse-clp Jekejeke Prolog...

Gems can be used to extend or modify functionality in Ruby applications. Commonly they’re used to distribute reusable functionality that is shared with other Rubyists for use in their applications and libraries. Some gems provide command line utilities to help automate tasks and speed up your work...

"string literal" 'string literal' "string literal with 'mismatching quotes'" // no errors; quotes are different. "string literal with "escaped quotes"" // no errors; quotes are escaped. `template string ${expression}` String("a b c") // r...

Realm is a mobile-first database solution designed to provide fast queries with low-memory consumption through usage of lazy-evaluation, along with type-safe and live-updating model objects. Realm is available for multiple platforms, and therefore encompasses multiple projects: Realm Objective...

dbstop in file at location if expression ParameterDetailsfileName of .m file (without extension), e.g. fit. This parameter is (Required) unless setting special conditional breakpoint types such as dbstop if error or dbstop if naninf.locationLine number where the breakpoint should be placed. ...

Go supports constants of character, string, boolean, and numeric values.

SQOOP Server configuration files are stored in server/config directory of distributed artifact along side with other configuration files of Tomcat (to host SQOOP server). File sqoop_bootstrap.properties specifies which configuration provider should be used for loading configuration for rest of Sq...

ADB (Android Debug Bridge) is a command line tool that used to communicate with an emulator instance or connected Android device. Overview of ADB A large portion of this topic was split out to adb shell List of examples moved to adb shell: Granting & revoking API 23+ permissions Sen...

This section provides an overview of what playframework is, and why a developer might want to use it. It should also mention any large subjects within playframework, and link out to the related topics. Since the Documentation for playframework is new, you may need to create initial versions of t...

Composer is PHP's most commonly used dependency manager. It's analogous to npm in Node, pip for Python, or NuGet for .NET. php path/to/composer.phar [command] [options] [arguments] ParameterDetailslicenseDefines the type of license you want to use in the Project.authorsDefines the author...

in ember-concurrency the extra setting of error is a work around to prevent thrown exceptions from bubbling up to Ember's onerror (since it is meant to be handled in the template). There is a feature request to handle this better.

Units at Runtime Units of Measure are used only for static checking by the compiler, and are not available at runtime. They cannot be used in reflection or in methods like ToString. For example, C# gives a double with no units for a field of type float<m> defined by and exposed from an ...