Tutorial by Examples: s

Microsoft describes 3 ways of installing WinDbg: as part of the WDK (Windows Driver Kit) as part of the SDK (Software Development Kit) with the installer of the SDK and deselecting everything else but "Debugging Tools for Windows" To get the installer, visit Download the WDK, WinDb...

Sometimes, programmers who are new Java will use primitive types and wrappers interchangeably. This can lead to problems. Consider this example: public class MyRecord { public int a, b; public Integer c, d; } ... MyRecord record = new MyRecord(); record.a = 1; // OK ...

Use this option if you don't need an Application subclass. This is the simplest option, but this way you can't provide your own Application subclass. If an Application subclass is needed, you will have to switch to one of the other options to do so. For this option, simply specify the fully-quali...

You can use ReactJS's components easily in TypeScript. Just rename the 'jsx' file extension to 'tsx': //helloMessage.tsx: var HelloMessage = React.createClass({ render: function() { return <div>Hello {this.props.name}</div>; } }); ReactDOM.render(<HelloMessage name=&q...

To match something that does not contain a given string, one can use negative lookahead: Regex syntax: (?!string-to-not-match) Example: //not matching "popcorn" String regexString = "^(?!popcorn).*$"; System.out.println("[popcorn] " + ("popcorn".matches(r...

lib.rs: pub fn to_test(output: bool) -> bool { output } Each file in the tests/ folder is compiled as single crate. tests/integration_test.rs extern crate test_lib; use test_lib::to_test; #[test] fn test_to_test(){ assert_eq!(to_test(true), true); }

When you do a groupby you can select either a single column or a list of columns: In [11]: df = pd.DataFrame([[1, 1, 2], [1, 2, 3], [2, 3, 4]], columns=["A", "B", "C"]) In [12]: df Out[12]: A B C 0 1 1 2 1 1 2 3 2 2 3 4 In [13]: g = df.groupby(...

It is possible to define custom string interpolators in addition to the built-in ones. my"foo${bar}baz" Is expanded by the compiler to: new scala.StringContext("foo", "baz").my(bar) scala.StringContext has no my method, therefore it can be provided by implicit c...

Using a Template Engine The following code will setup Jade as template engine. (Note: Jade has been renamed to pug as of December 2015.) const express = require('express'); //Imports the express module const app = express(); //Creates an instance of the express module const PORT = 3000; //Ra...

Example Using Activity w/ LocationRequest /* * This example is useful if you only want to receive updates in this * activity only, and have no use for location anywhere else. */ public class LocationActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, ...

If you want to parse a String to enum with Gson: {"status" : "open"} public enum Status { @SerializedName("open") OPEN, @SerializedName("waiting") WAITING, @SerializedName("confirm") CONFIRM, @SerializedName(&...

SELECT s.name + '.' + t.NAME AS TableName, SUM(a.used_pages)*8 AS 'TableSizeKB' --a page in SQL Server is 8kb FROM sys.tables t JOIN sys.schemas s on t.schema_id = s.schema_id LEFT JOIN sys.indexes i ON t.OBJECT_ID = i.object_id LEFT JOIN sys.partitions p ON i.object_id = ...

Since JUnit is a Java library, all you have to do to install it is to add a few JAR files into the classpath of your Java project and you're ready to go. You can download these two JAR files manually: junit.jar & hamcrest-core.jar. If you're using Maven, you can simply add in a dependency into...

Caller info attributes can be used to pass down information about the invoker to the invoked method. The declaration looks like this: using System.Runtime.CompilerServices; public void LogException(Exception ex, [CallerMemberName]string callerMemberName = "", ...

Optional Parameters In TypeScript, every parameter is assumed to be required by the function. You can add a ? at the end of a parameter name to set it as optional. For example, the lastName parameter of this function is optional: function buildName(firstName: string, lastName?: string) { // ...

In themes.xml: <style name="AppTheme" parent="Theme.AppCompat"> <!-- Theme attributes here --> </style> In AndroidManifest.xml: <application android:icon="@mipmap/ic_launcher" android:label="@string/app_name" andr...

You can customize your theme’s color palette. Using framework APIs 5.0 <style name="AppTheme" parent="Theme.Material"> <item name="android:colorPrimary">@color/primary</item> <item name="android:colorPrimaryDark">@color/pri...

In themes.xml: <style name="MyActivityTheme" parent="Theme.AppCompat"> <!-- Theme attributes here --> </style> In AndroidManifest.xml: <application android:icon="@mipmap/ic_launcher" android:label="@string/app_name" ...

Have required JavaScript and CSS files included in your index.html. You can do this by either using the CDN files availiable at the following paths: <link rel="stylesheet" type="text/css" href="//cdn.datatables.net/1.10.12/css/jquery.dataTables.css"> <scr...

XML elements often nest, have data in attributes and/or as character data. The way to capture this data is by using ,attr and ,chardata respectively for those cases. var doc = ` <parent> <child1 attr1="attribute one"/> <child2>and some cdata</child2> </p...