Tutorial by Examples: bas

Task Rebuild -Depends Clean, Build { "Rebuild" } Task Build { "Build" } Task Clean { "Clean" } Task default -Depends Build

QThread is a handle to a platform thread. It lets you manage the thread by monitoring its lifetime, and requesting that it finishes its work. In most cases inhering from the class is not recommended. The default run method starts an event loop that can dispatch events to objects living in the class...

@supports (display: flex) { /* Flexbox is available, so use it */ .my-container { display: flex; } } In terms of syntax, @supports is very similar to @media, but instead of detecting screen size and orientation, @supports will detect whether the browser can handle a given CSS rule....

Subdomain-based routing can be handled in Symfony using host parameter. For example, _locale parameter can be used as subdomain value. Assuming locale: en domain: somedomain.com parameters are defined in parameters.yml config file, route would be: /** * @Route( * "/", * ...

The following example creates a FileSystemWatcher to watch the directory specified at run time. The component is set to watch for changes in LastWrite and LastAccess time, the creation, deletion, or renaming of text files in the directory. If a file is changed, created, or deleted, the path to the f...

Add the I18N nuget package to your MVC project. In web.config, add the i18n.LocalizingModule to your <httpModules> or <modules> section. <!-- IIS 6 --> <httpModules> <add name="i18n.LocalizingModule" type="i18n.LocalizingModule, i18n" /> &...

EXEC sp_MSForEachTable 'ALTER INDEX ALL ON ? REBUILD'

Polymorphism is the ability to perform an action on an object regardless of its type. This is generally implemented by creating a base class and having two or more subclasses that all implement methods with the same signature. Any other function or method that manipulates these objects can call the ...

enum Fruit { apple, banana } main() { var a = Fruit.apple; switch (a) { case Fruit.apple: print('it is an apple'); break; } // get all the values of the enums for (List<Fruit> value in Fruit.values) { print(value); } // get the second val...

Groovy's safe navigation operator allows to avoid NullPointerExceptions when accessing to methods or attributes on variables that may assume null values. It is equivalent to nullable_var == null ? null : nullable_var.myMethod() def lst = ['foo', 'bar', 'baz'] def f_value = lst.find { it.startsWi...

You can default to the normal Mongo format by defining your collections with the idGeneration field. MyCollection = new Meteor.Collection('mycollection', {idGeneration : 'MONGO'});

String Strings are created by wrapping the text with double quotes. Double-quoted strings can evalute variables and special characters. $myString = "Some basic text" $mySecondString = "String with a $variable" To use a double quote inside a string it needs to be escaped usi...

Run interactive vim tutorials as many times as needed to feel comfortable with the basics. Vim features several modes, e.g. normal mode, insert mode and command-line mode. Normal mode is for editing and navigating text. In this mode h, j, k and l correspond to the cursor keys ←, ↓, ↑ and →. Most c...

Information about the database connections SELECT a.mon$attachment_id as Attachment_ID, a.mon$server_pid as Server_PID, case a.mon$state when 1 then 'active' when 0 then 'idle' end as State, a.mon$attachment_name as Database_Name, ...

Suppose that you had started an interactive rebase: git rebase --interactive HEAD~20 and by mistake, you squashed or dropped some commits that you didn't want to lose, but then completed the rebase. To recover, do git reflog, and you might see some output like this: aaaaaaa HEAD@{0} rebase -i (...

If we have a Model as following, from django.db import models from django.contrib.auth.models import User class UserModuleProfile(models.Model): user = models.OneToOneField(User) expired = models.DateTimeField() admin = models.BooleanField(default=False) employee_id = models...

The & operator is the parent selector. When used in or as a selector, it is replaced with the full parent selectors (entire sequence of selectors right upto to the topmost level of a nested block) in the final CSS output. It is useful when creating nested rules that require using the parent sel...

psycopg2 is the most popular PostgreSQL database adapter that is both lightweight and efficient. It is the current implementation of the PostgreSQL adapter. Its main features are the complete implementation of the Python DB API 2.0 specification and the thread safety (several threads can share t...

To open an app with defined URL scheme todolist://: Objective-C NSURL *myURL = [NSURL URLWithString:@"todolist://there/is/something/to/do"]; [[UIApplication sharedApplication] openURL:myURL]; Swift let stringURL = "todolist://there/is/something/to/do" if let url = NSURL(s...

Your DocumentDB database can be created by using the CreateDatabaseAsync method of the DocumentClient class. A database is the logical container of JSON document storage partitioned across collections. using System.Net; using System.Threading.Tasks; using Microsoft.Azure.Documents; using Microso...