Tutorial by Examples: g

Result<T, E> is an enum type which has two variants: Ok(T) indicating successful execution with meaningful result of type T, and Err(E) indicating occurrence of an unexpected error during execution, described by a value of type E. enum DateError { InvalidDay, InvalidMonth, } str...

Using a regular expression, parse a record name that might be hierarchical. The expression looks for the final colon in the name. It returns what follows the colon, or the entire name if none: regexp_substr( {name} , '[^:]*$' )

The example builds a string from the name of the parent record, the name of this record, and the memo of this record. {createdfrom} || ' ' || {name} || ' ' || {memo}

'<div style="font-size:11pt">' || expression || '</div>'

In a string formula field, consider that some values might contain substrings which look to the browser like HTML. Unless this is intentional, it is important to protect the values from corruption. This is useful to avoid injection attacks: it prevents someone from entering HTML into a comment field...

utl_url.escape( expression )

JavaScript allows us to define getters and setters in the object literal syntax. Here's an example: var date = { year: '2017', month: '02', day: '27', get date() { // Get the date in YYYY-MM-DD format return `${this.year}-${this.month}-${this.day}` }, ...

String literals provide the most convenient way to represent string values in Java source code. A String literal consists of: An opening double-quote (") character. Zero or more other characters that are neither a double-quote or a line-break character. (A backslash (\) character alters t...

var setValue; var obj = {}; Object.defineProperty(obj, "objProperty", { get: function(){ return "a value"; }, set: function(value){ setValue = value; } });

This guide is intended to get you started on creating your own User Interface by subclassing the LeftAndMain class. By the end of this guide, you will have created your first Hello World interface in the Administration Panel. Requirements This guide requires you to have at least version 3.* of th...

If you haven't already lets simply start this file of with: class HelloWorldLeftAndMain extends LeftAndMain { } Configure The first thing you should do, is define the $url_segment that will be used to access the interface, and the title ($menu_title) that will appear in the side navigation m...

Groups can be defined in /etc/subversion/svn_access_control file. Create/edit the file using following command nano /etc/subversion/svn_access_control Use syntax specified as below to define groups and assign members. [groups] groupname = <list of users, comma separated> e.g. [groups]...

Access specifications for subversion repositories is specified etc/subversion/svn_access_control file Create/edit the file using following command nano /etc/subversion/svn_access_control Use following syntax to configure access permissions for repositories to group/members [Repository:<Path&g...

Registering a custom post type does not mean it gets added to the main RSS feed automatically.You need to use request filter to add custom post types to main RSS feed. // Add 'books' custom post types on main RSS feed function add_book_post_types_to_rss($qv) { if (isset($qv['feed']) &&amp...

Requirement for Local development 1) MySQL server(I am Using XAMPP for MySQL server) 2) For Test API You can use Postman(optional) 3) Before run application,make sure MySQL server is running, properly prepare your application.properties file(DB_Name, Username,Password). 1.Add following depen...

winsound Windows environment import winsound winsound.PlaySound("path_to_wav_file.wav", winsound.SND_FILENAME) wave Support mono/stereo Doesn't support compression/decompression import wave with wave.open("path_to_wav_file.wav", "rb") as wav_file: #...

Your typical jQuery object will contain references to any number of DOM elements, and that's why jQuery objects are often referred to as collections. If you want to do any manipulating with specific elements (e.g. getting a data attribute, calculating specific positions) then you need to use .each()...

You may want to do this if the remote repository is migrated. The command for changing the remote url is: git remote set-url It takes 2 arguments: an existing remote name (origin, upstream) and the url. Check your current remote url: git remote -v origin https://bitbucket.com/develop/myrep...

Let's say we have a problem of size n. Now for each step of our algorithm(which we need write), our original problem becomes half of its previous size(n/2). So at each step, our problem becomes half. StepProblem1n/22n/43n/84n/16 When the problem space is reduced(i.e solved completely), it cannot ...

A higher-order function, as opposed to a first-order function, can have one of three forms: One or more of its parameters is a function, and it returns some value. It returns a function, but none of its parameters is a function. Both of the above: One or more of its parameters is a fu...