Tutorial by Examples: t

Observers are used for listening to livecycle callbacks of a certain model in Laravel. These listeners may listen to any of the following actions: creating created updating updated saving saved deleting deleted restoring restored Here is an example of an observer. UserObserver &l...

The standard library comes with a rich collection of lazy iterables (and libraries such as Iterators.jl provide even more). Lazy iterables can be composed to create more powerful iterables in constant time. The most important lazy iterables are take and drop, from which many other functions can be c...

Format: [command] [> | >>] [filename] > saves the output of [command] into [filename]. >> appends the output of [command] into [filename]. Examples: echo Hello World > myfile.txt saves "Hello World" into myfile.txt echo your name is %name% >> myfi...

Set this attribute in your manifest's or element to enable or disable multi-window display: android:resizeableActivity=["true" | "false"] If this attribute is set to true, the activity can be launched in split-screen and freeform modes. If the attribute is set to false, the...

While launching an application firstly main thread is executed. This Main thread handles all the UI concept of application. If we want to run long the task in which we don't need the UI then we use thread for running that task in background. Here is the example of Thread which describes blow: new ...

Format and Usage: echo %cd% %cd% is a system variable that contains the current directory path

Format: cd "<path>" Example: cd "C:\Program Files (x86)\Microsoft Office" cd is an abbreviation for chdir and the two commands behave in the exact same way. For the sake of consistency, cd will be used throughout this topic. To navigate to the directory one leve...

cd by itself will not allow a user to move between drives. To move to a different drive, the /d option must be specified. e.g. Moving from C:\Users\jdoe\Desktop to D:\Office Work cd /d "D:\Office Work"

Usage to list all folders and files in the current directory: dir A target directory can also be specified: dir C:\TargetPath When specifying a path with spaces, it must be surrounded by quotes: dir "C:\Path With Spaces"

Install the NLog.Config package. (NuGet 3 users should install NLog and add the config manually.) Write to logger: using NLog; public class MyClass { private static Logger logger = LogManager.GetCurrentClassLogger(); public void MyMethod1() { logger.Trace("Sample trace mess...

layout.scss nav { ul { margin: 0; padding: 0; list-style: none; li { margin: 0 5px; } } } output nav ul { margin: 0; padding: 0; list-style: none; } nav ul li { margin: 0 5px; }

The following should be added to your global .gitconfig file [merge] tool = kdiff3 [mergetool "kdiff3"] path = D:/Program Files (x86)/KDiff3/kdiff3.exe keepBackup = false keepbackup = false trustExitCode = false Remember to set the path property to point to th...

[diff] tool = kdiff3 guitool = kdiff3 [difftool "kdiff3"] path = D:/Program Files (x86)/KDiff3/kdiff3.exe cmd = \"D:/Program Files (x86)/KDiff3/kdiff3.exe\" \"$LOCAL\" \"$REMOTE\"

[merge] tool = intellij [mergetool "intellij"] cmd = cmd \"/C D:\\workspace\\tools\\symlink\\idea\\bin\\idea.bat merge $(cd $(dirname "$LOCAL") && pwd)/$(basename "$LOCAL") $(cd $(dirname "$REMOTE") && pwd)/$(basename "$REM...

[diff] tool = intellij guitool = intellij [difftool "intellij"] path = D:/Program Files (x86)/JetBrains/IntelliJ IDEA 2016.2/bin/idea.bat cmd = cmd \"/C D:\\workspace\\tools\\symlink\\idea\\bin\\idea.bat diff $(cd $(dirname "$LOCAL") && pwd)/$(ba...

In C++, looping through a sequence container c can be done using indexes as follows: for(size_t i = 0; i < c.size(); ++i) c[i] = 0; While simple, such writings are subject to common semantic errors, like wrong comparison operator, or wrong indexing variable: for(size_t i = 0; i <= c.size(...

Options are used for adding capabilities such as "User-Agent". Example in C#: var options = new PhantomJSOptions(); options.AddAdditionalCapability("phantomjs.page.settings.userAgent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:25.0) Gecko/20100101 Firefox/25.0&qu...

First, add the following permissions to the manifest of your project in order to enable device storage access: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> ...

When updating multiple rows with different values it is much quicker to use a bulk update. UPDATE people SET name = (CASE id WHEN 1 THEN 'Karl' WHEN 2 THEN 'Tom' WHEN 3 THEN 'Mary' END) WHERE id IN (1,2,3); By bulk updating only one query can be sent to the ser...

GNU awk supports a sub-string extraction function to return a fixed length character sequence from a main string. The syntax is *substr(string, start [, length ])* where, string is source string and start marks the start of the sub-string position you want the extraction to be done for an optio...