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CREATE TABLE table_name ( column_name1 data_type(size), column_name2 data_type(size), column_name3 data_type(size), .... ); // Basic table creation CREATE TABLE table_name [IF NOT EXISTS] ( column_name1 data_type(size), column_name2 data_type(size), column_name3 data_type(size), ...
Unlike most languages, Python supports two major versions. Since 2008 when Python 3 was released, many have made the transition, while many have not. In order to understand both, this section covers the important differences between Python 2 and Python 3. There are currently two supported vers...
Data.table is a package that extends the functionality of data frames from base R, particularly improving on their performance and syntax. See the package's Docs area at Getting started with data.table for details. DT[i, j, by] # DT[where, select|update|do, by] DT[...][...] # chaining ####...
React Native lets you build mobile apps using only JavaScript. It uses the same design as React, letting you compose a rich mobile UI from declarative components. With React Native, you don't build a “mobile web app”, an “HTML5 app”, or a “hybrid app”. You build a real mobile app that's indisting...
Wild Card with % : SELECT * FROM [table] WHERE [column_name] Like '%Value%' Wild Card with _ : SELECT * FROM [table] WHERE [column_name] Like 'V_n%' Wild Card with [charlist] : SELECT * FROM [table] WHERE [column_name] Like 'V[abc]n%' LIKE condition in WHERE clause is used...
Overview matplotlib is a plotting library for Python. It provides object-oriented APIs for embedding plots into applications. It is similar to MATLAB in capacity and syntax. It was originally written by J.D.Hunter and is actively being developed. It is distributed under a BSD-Style License. ...
XPath is a language for addressing parts of an XML document. It is used in XSLT and is a subset of XQuery. Libraries are available for most other programming languages as well. XPath is an international standard with specifications published by W3C: XPath 1.0: XML Path Language (XPath), Vers...
Nothing is really random and thus the javadoc calls those numbers pseudorandom. Those numbers are created with a pseudorandom number generator.
The SessionFactory bean is responsible for creating, maintaining, closing and flushing all the database sessions that the TransactionManager asks it to create. That's why we autowire the SessionFactory into DAO's and make run all queries through it. One of the biggest questions that new Hibernate...
Nativescript is a highly performant cross-platform mobile app runtime, which allows you to target iOS and android (with windows in the pipeline) using web technologies (JS and html). It was created with a number of key aims: Visually Performant: no UI Jank even on android you have buttery smoot...
While Python's context managers are widely used, few understand the purpose behind their use. These statements, commonly used with reading and writing files, assist the application in conserving system memory and improve resource management by ensuring specific resources are only in use for certain ...
Set Color of Font Using NSAttributedString
CAAnimation is an abstract animation class. It provides the basic support for the CAMediaTiming and CAAction protocols. To animate Core Animation layers or Scene Kit objects, create instances of the concrete subclasses CABasicAnimation, CAKeyframeAnimation, CAAnimationGroup, or CATransition. ...

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