Thread.sleep causes the current thread to suspend execution for a specified period. This is an efficient means of making processor time available to the other threads of an application or other applications that might be running on a computer system. There are two overloaded sleep methods in the Thr...
One of the most useful queries for end users of large RDBMS's is a search of an information schema.
Such a query allows users to rapidly find database tables containing columns of interest, such as when attempting to relate data from 2 tables indirectly through a third table, without existing knowl...
The function angular.isFunction determines and returns true if and only if the value passed to is a reference to a function.
The function returns a reference to the now extended destination object
angular.isFunction(fn)
Examples
var onClick = function(e) {return e};
angular.isFunction(onCli...
The function angular.toJson will take an object and serialize it into a JSON formatted string.
Unlike the native function JSON.stringify, This function will remove all properties beginning with $$ (as angular usually prefixes internal properties with $$)
angular.toJson(object)
As data needs to ...
The function angular.fromJson will deserialize a valid JSON string and return an Object or an Array.
angular.fromJson(string|object)
Note that this function is not limited to only strings, it will output a representation of any object passed to it.
Examples:
angular.fromJson("{\"yo...
Be careful, this approach might be considered as a bad design for angular apps, since it requires programmers to remember both where functions are placed in the scope tree, and to be aware of scope inheritance. In many cases it would be preferred to inject a service (Angular practice - using scope ...
In medical imaging, spectroscopy, image processing, cryptography and other areas of science and engineering it is often the case that one wishes to compute multidimensional Fourier transforms of images. This is quite straightforward in Matlab: (multidimensional) images are just n-dimensional matrice...
_mycompletion() {
local command_name="$1" # not used in this example
local current_word="$2"
local previous_word="$3" # not used in this example
# COMPREPLY is an array which has to be filled with the possible completions
# compgen is used to fi...
It is possible to save a Docker container's filesystem contents to a tarball archive file. This is useful in a pinch for moving container filesystems to different hosts, for example if a database container has important changes and it isn't otherwise possible to replicate those changes elsewhere. Pl...
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?yourdomain.com/.*$ [NC]
RewriteRule \.(gif|jpg|css)$ - [F]
This blocks all the links to '.gif', '.jpg' and '.css' files which are not from the domain name http://www.yourdomain.com.
Display alterna...
GCD provides mechanism for performing a loop, whereby the loops happen concurrently with respect to each other. This is very useful when performing a series of computationally expensive calculations.
Consider this loop:
for index in 0 ..< iterations {
// Do something computationally expens...
A powerful alternative to virtualenv is Anaconda - a cross-platform, pip-like package manager bundled with features for quickly making and removing virtual environments. After installing Anaconda, here are some commands to get started:
Create an environment
conda create --name <envname> pyth...
The Kernel#require method will load files only once (several calls to require will result in the code in that file being evaluated only once). It will search your ruby $LOAD_PATH to find the required file if the parameter is not an absolute path. Extensions like .rb, .so, .o or .dll are optional. Re...
When files are not available, the require family will throw a LoadError. This is an example which illustrates loading optional modules only if they exist.
module TidBits
@@unavailableModules = []
[
{ name: 'CoreExtend', file: 'core_extend/lib/core_extend' } \
, { name: 'Fs' ...
This function returns the floating-point remainder of the division of x/y. The returned value has the same sign as x.
#include <math.h> /* for fmod() */
#include <stdio.h> /* for printf() */
int main(void)
{
double x = 10.0;
double y = 5.1;
double modulus = fmod(x,...
Requirements: Docker can be installed on any Linux with a kernel of at least version 3.10. Docker is supported on the following 64-bit versions of Ubuntu Linux:
Ubuntu Xenial 16.04 (LTS)
Ubuntu Wily 15.10
Ubuntu Trusty 14.04 (LTS)
Ubuntu Precise 12.04 (LTS)
Easy Installation
Note: Installi...
Whenever a template is called upon, the default data context of the template is implicitly gained from the caller as in example the childTemplate gains the data context of the parentTemplate i.e caller template
<template name="parentTemplate">
{{#with someHelperGettingDataForPa...
Named Functions
defmodule Math do
# one way
def add(a, b) do
a + b
end
# another way
def subtract(a, b), do: a - b
end
iex> Math.add(2, 3)
5
:ok
iex> Math.subtract(5, 2)
3
:ok
Private Functions
defmodule Math do
def sum(a, b) do
a...
