Tutorial by Examples: w

Unlike for and while loops, do-while loops check the truth of the condition at the end of the loop, which means the do block will execute once, and then check the condition of the while at the bottom of the block. Meaning that a do-while loop will always run at least once. For example this do-while...

Input file Mary had a little lamb its fleece was white as snow and everywhere that Mary went the lamb was sure to go. Pig Word Count Code -- Load input from the file named Mary, and call the single -- field in the record 'line'. input = load 'mary' as (line); -- TOKENIZE splits the line...

View content: adb shell ls \$EXTERNAL_STORAGE adb shell ls \$SECONDARY_STORAGE View path: adb shell echo \$EXTERNAL_STORAGE adb shell echo \$SECONDARY_STORAGE

Entity Framework (EF) is an object-relational mapper that enables .NET developers to work with relational data using domain-specific objects. It eliminates the need for most of the data-access code that developers usually need to write. Entity Framework allows you to create a model by writing cod...

A job queue that maintains a worker pool, useful for doing things like background processing in web servers: package main import ( "fmt" "runtime" "strconv" "sync" "time" ) // Job - interface for job processing type Job interf...

C# Maximizing the window driver.Manage().Window.Maximize(); This is fairly straightforward, ensures that our currently active window is maximized. Position of the window driver.Manage().Window.Position = new System.Drawing.Point(1, 1); Here we essentially move the currently active window t...

Exec sp_configure 'show advanced options' ,1 RECONFIGURE GO -- Show all configure sp_configure

If we have Multiple IF...ELSE IF statements but we also want also want to execute some piece of code if none of expressions are evaluated to True , then we can simple add a final ELSE block which only gets executed if none of the IF or ELSE IF expressions are evaluated to true. In the example below...

This is the image of project structure in Android studio: This is the image of project structure of nativescript project: As you see they are same. so we can write java code in nativescript as we write in android studio. We want to Add Toast to the default app of nativescript. after creating...

A grouped VIEW is based on a query with a GROUP BY clause. Since each of the groups may have more than one row in the base from which it was built, these are necessarily read-only VIEWs. Such VIEWs usually have one or more aggregate functions and they are used for reporting purposes. They are also h...

VIEWs based on a UNION or UNION ALL operation are read-only because there is no single way to map a change onto just one row in one of the base tables. The UNION operator will remove duplicate rows from the results. Both the UNION and UNION ALL operators hide which table the rows came from. Such VIE...

If you are running a command that returns hundreds of lines, but your interest is just on the lines that contains the word <word>, you should definitely use grep! For example try running: ifconfig -a Check the output, that could be only a few lines or quite long, if you have a server with ...

This tutorial will guide you through the process from scratch. Please note some preliminary notes about this particular setup, useful in case that you already have some requested package: Is needed a version of php >=5.0 (I had troubles with php 7.0) Is requested any version of perl Is need...

To execute a function within a loop in node.js, it's fine to use a for loop for short loops. But the loop is long, using for loop will increase the time of processing which might cause the node process to hang. In such scenarios, you can use: asycn.times function recursiveAction(n, callback) { ...

\m : Beginning of a word. \M : End of a word. \y : Word boundary. \Y : a point that is not a word boundary. \Z : matches end of data. Documentation: re_syntax

First, make sure your app can be backed up in AndroidManifest.xml, i.e. android:allowBackup is not false. Backup command: adb -s <device_id> backup -noapk <sample.package.id> Create a tar with dd command: dd if=backup.ab bs=1 skip=24 | python -c "import zlib,sys;sys.stdout.wri...

adb -s <serialNumber> shell dumpsys activity activities Very useful when used together with the watch unix command: watch -n 5 "adb -s <serialNumber> shell dumpsys activity activities | sed -En -e '/Stack #/p' -e '/Running activities/,/Run #0/p'"

You may use this command for listing the files for your own debuggable apk: adb shell run-as <sample.package.id> ls /data/data/sample.package.id/cache And this script for pulling from cache, this copy the content to sdcard first, pull and then remove it at the end: #!/bin/sh adb shell &q...

This example is useful for windows-like endings: $ mysqlimport --lines-terminated-by='\r\n' mycompany employee.txt

First, add Fresco to your build.gradle as shown in the Remarks section: If you need additional features, like animated GIF or WebP support, you have to add the corresponding Fresco artifacts as well. Fresco needs to be initialized. You should only do this 1 time, so placing the initialization in y...