Tutorial by Examples: the

The simplest Options page

if( function_exists('acf_add_options_page') ) { acf_add_options_page(); } Add the above code to functions.php and an options page named 'Options' will appear in your Wordpress admin area. You now need to asign some custom fields to the page.

advanced-custom-fields • Custom Options page

The BASH_ALIASES is an internal bash assoc array

Aliases are named shortcuts of commands, one can define and use in interactive bash instances. They are held in an associative array named BASH_ALIASES. To use this var in a script, it must be run within an interactive shell #!/bin/bash -li # note the -li above! -l makes this behave like a login s...

Bash • Aliasing

4. Chaining string manipulation methods together.

Dim exStr : exStr = " <Head>data</Head> " Dim res res = Ucase(Replace(Mid(exStr, instr(exStr, ">")+1,4), "ata", "ark")) 'res now equals DARK 'instr(exStr, ">") returns 7 'Mid(" <Head>data</Head> ", 7+1,...

vbscript • Strings

createDissolvedGDB to create a file gdb on the workspace

def createDissolvedGDB(workspace, gdbName): gdb_name = workspace + "/" + gdbName + ".gdb" if(arcpy.Exists(gdb_name): arcpy.Delete_management(gdb_name) arcpy.CreateFileGDB_management(workspace, gdbName, "") else: arcpy.CreateFi...

Python Language • ArcPy

Using the PROMPT_COMMAND envrionment variable

When the last command in an interactive bash instance is done, the evaluated PS1 variable is displayes. Before actually displaying PS1 bash looks whether the PROMPT_COMMAND is set. This value of this var must be a callable program or script. If this var is set this program/script is called BEFORE th...

Bash • Handling the system prompt

typealias for other types

typealias Number = NSNumber You can also use a type alias to give a type another name to make it easier to remember, or make your code more elegant. typealias for Tuples typealias PersonTuple = (name: String, age: Int, address: String) And this can be used as: func getPerson(for name: Strin...

Swift Language • Typealias

Enums with explicit values

By default all enum values are resolved to numbers. Let's say if you have something like enum MimeType { JPEG, PNG, PDF } the real value behind e.g. MimeType.PDF will be 2. But some of the time it is important to have the enum resolve to a different type. E.g. you receive the value fr...

TypeScript • Enums

Using the DOM API (with graphical text: Canvas, SVG, or image file)

Using canvas elements HTML provides the canvas element for building raster-based images. First build a canvas for holding image pixel information. var canvas = document.createElement('canvas'); canvas.width = 500; canvas.height = 250; Then select a context for the canvas, in this case two-di...

JavaScript • Getting started with JavaScript

Updating the UI from a Background Thread

It is common to use a background Thread for doing network operations or long running tasks, and then update the UI with the results when needed. This poses a problem, as only the main thread can update the UI. The solution is to use the runOnUiThread() method, as it allows you to initiate code exe...

Android • Thread

Customizing User Interface/Theme

To customize Sublime Text (including themes, syntax highlighting etc) you must have package control installed. To install package control visit www.packagecontrol.io/installation. Instead of following the above link, you can open the Sublime console to install it. The console is accessed via the c...

sublimetext • Getting started with sublimetext

Doing work in the background

task = Task.async(fn -> expensive_computation end) do_something_else result = Task.await(task)

Elixir Language • Task

Allowing Redirect URLs Other Than Site Root

Go to Providers > ApplicationOAuthProvider.cs and edit the ValidateClientRedirectUri function. This was a big gotcha to me, as if you don't do this there'll be a fantastically unhelpful error message. By default, this code will make any callbacks to your site invalid unless they're to the site's ...

asp.net-web-api2 • OAuth 2.0 in ASP.NET Web API

Your first theano program

In this example, we will compile functions that computes sum and difference given two real number. from __future__ import print_function import theano import theano.tensor as T #define two symbolic scalar s_x = T.fscalar() s_y = T.fscalar() #compute something s_sum = s_x + s_y s_diff = ...

theano • Getting started with theano

theano map and reduce

theano.map and theano.scan_module.reduce are wrappers of theano_scan. They can be seen as handicapped version of scan. You can view Basic scan usage section for reference. import theano import theano.tensor as T s_x = T.ivector() s_sqr, _ = theano.map( fn = lambda x:x*x, sequences = [s...

theano • Loops with theano

Create a bot with the BotFather

Open a chat with @BotFather in Telegram and click the /start command. After you get a list of commands Select the command /newbot to get this Message: Alright, a new bot. How are we going to call it? Please choose a name for your bot. Enter a name for your bot, which can be anything, and sen...

telegram-bot • Getting started with telegram-bot

Create the Jenkins Credentials

The hard part is over! Now just create the credentials to be used in Jenkins. Use your own Username and the passphrase used to create the SSH Key. This is what it should look like now (with your own private github repo and user name:

jenkins • Install Jenkins on Windows with SSH support for private GitHub repositories

Combining them all

set importantvar=importantstuff call :stuff 123 var1 rem More code... :stuff <arg1> <arg2> setlocal set importantvar=%~1 echo Writing some stuff into %~2! endlocal set %~2=some stuff setlocal set importantvar=junk endlocal goto :eof This utilizes the basic function, setl...

batch-file • Functions

Adding the DayNight theme to an app

The DayNight theme gives an app the cool capability of switching color schemes based on the time of day and the device's last known location. Add the following to your styles.xml: <style name="AppTheme" parent="Theme.AppCompat.DayNight"> <!-- Customize your th...

Android • DayNight Theme (AppCompat v23.2 / API 14+)

regr_slope(Y, X) : slope of the least-squares-fit linear equation determined by the (X, Y) pairs

To illustrate how to use regr_slope(Y,X), I applied it to a real world problem. In Java, if you don't clean up memory properly, the garbage can get stuck and fill up the memory. You dump statistics every hour about memory utilization of different classes and load it into a postgres database for anal...

postgresql • Aggregate Functions

Reading a file till the end

Reading a text file line-by-line A proper way to read a text file line-by-line till the end is usually not clear from ifstream documentation. Let's consider some common mistakes done by beginner C++ programmers, and a proper way to read the file. Lines without whitespace characters For the sake o...

C++ • C++ Streams