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Here's how to match a prefix code (a + or (00), then a number from 1 to 1939, with an optional space): This doesn't look for a valid prefix but something that might be a prefix. See the full list of prefixes (?:00|\+)?[0-9]{4} Then, as the entire phone number length is, at most, 15, we can look...

A simple example: CL-USER> (defun make-apply-twice (fun) "return a new function that applies twice the function`fun' to its argument" (lambda (x) (funcall fun (funcall fun x)))) MAKE-APPLY-TWICE CL-USER> (funcall (make-apply-twice #'1+) 3) 5 ...

Angular 2 offers two different types of pipes - stateless and stateful. Pipes are stateless by default. However, we can implement stateful pipes by setting the pure property to false. As you can see in the parameter section, you can specify a name and declare whether the pipe should be pure or not, ...

You can reload the current state using the $state.reload method from your controller $state.reload() This is a shorthand for (code taken from the official docs) $state.transitionTo($state.current, $stateParams, { reload: true, inherit: false, notify: false }); Running a reload on your ...

$state.go is shorthand method to $state.transitionTo $state.go(toState [, toParams] [, options]) This method automatically sets your options to { location: true, inherit: true, relative: $state.$current, notify: true } (unless you override them) and allows you to transition with less code. Ex...

Microsoft Access is one of the Microsoft Office suite of programs. However, it is only available in some packages of MS Office. If you wish to obtain Access, please make sure to carefully examine the box or download specifications for each version of Microsoft Office. MS Access is only available fo...

[ alias ] ignored = ! git ls-files --others --ignored --exclude-standard --directory \ && git ls-files --others -i --exclude-standard Shows one line per file, so you can grep (only directories): $ git ignored | grep '/$' .yardoc/ doc/ Or count: ~$ git ignored | ...

Sometimes you may want maintain versions of a git repository on machines that have no network connection. Bundles allow you to package git objects and references in a repository on one machine and import those into a repository on another. git tag 2016_07_24 git bundle create changes_between_tags...

The year, month or day components of a DATE data type can be found using the EXTRACT( [ YEAR | MONTH | DAY ] FROM datevalue ) SELECT EXTRACT (YEAR FROM DATE '2016-07-25') AS YEAR, EXTRACT (MONTH FROM DATE '2016-07-25') AS MONTH, EXTRACT (DAY FROM DATE '2016-07-25') AS DAY FROM D...

Create new Jekyll Post To create a new Jekyll Post, create a new file on _posts directory with the format YYYY-MM-DD-title.MARKUP Replace MARKUP with the file extension for the language you want to use. This is usually Markdown(.md or .markdown) or HTML(.html). _posts/2017-01-01-hello-jekyll.m...

In some cases you might want to add an additional description to an enum value, for instance when the enum value itself is less readable than what you might want to display to the user. In such cases you can use the System.ComponentModel.DescriptionAttribute class. For example: public enum Possibl...

Installing Appcelerator Titanium At first we need to set up Titanium: command-line tools (CLI) to compile the apps the MVC framework Alloy the SDK The main parts are installed using the node.js package manager 'npm'. Check https://nodejs.org/ if you need to install it. Linux (Fedora) If y...

Detecting the current state of the network connection and responding to any changes that might occur, can be done by using one of several plugins. This example is about the cordova-plugin-network-information plugin. Add the plugin to the project: cordova plugin add cordova-plugin-network-informati...

echo "Prints only the matching part of the lines" | grep -o "matching" # prints matching

$sce ("Strict Contextual Escaping") is a built-in angular service that automatically sanitize content and internal sources in templates. injecting external sources and raw HTML into the template requires manual wrapping of$sce. In this example we'll create a simple $sce sanitation f...

string s1 = "string1"; string s2 = "string2"; string s3 = s1 + s2; // "string1string2"

Concatenating strings using a StringBuilder can offer performance advantages over simple string concatenation using +. This is due to the way memory is allocated. Strings are reallocated with each concatenation, StringBuilders allocate memory in blocks only reallocating when the current block is e...

The String.Join method can be used to concatenate multiple elements from a string array. string[] value = {"apple", "orange", "grape", "pear"}; string separator = ", "; string result = String.Join(separator, value, 1, 2); Console.WriteLine(resu...

Counting rows based on a specific column value: SELECT category, COUNT(*) AS item_count FROM item GROUP BY category; Getting average income by department: SELECT department, AVG(income) FROM employees GROUP BY department; The important thing is to select only columns specified in the GRO...

PrestaShop can be download here. You can find system requirements here.