Tutorial by Examples: st

SWIFT: Getting an instance of UIStoryboard programmatically can be done as follows: let storyboard = UIStoryboard(name: "Main", bundle: nil) where: name => the name of the storyboard without the extension bundle => the bundle containing the storyboard file and its relate...

RTL (Right-to-left) support is an essential part in planning for i18n and L10n. Unlike English language which is written from left to right, many languages like Arabic, Japanese, Hebrew, etc. are written from right to left. To appeal to a more global audience, it is a good idea to plan your layouts ...

To test if the layouts that have been created are RTL compatible, do the following : Go to Settings -> Developer options -> Drawing -> Force RTL layout direction Enabling this option would force the device to use RTL locales and you can easily verify all parts of the app for RTL suppo...

The first step for coding for localization is to create default resources. This step is so implicit that many developers do not even think about it. However, creating default resources is important because if the device runs on an unsupported locale, it would load all of its resources from the defau...

To provide translations in other languages (locales), we need to create a strings.xml in a separate folder by the following convention : res/values-<locale>/strings.xml An example for the same is given below: In this example, we have default English strings in the file res/values/string...

If your web application uses the SSL encryption, you need to capture HTTPS traffic instead of HTTP. To record HTTPS Traffic with JMeter, you need to configure the SSL certificates. Configure your SSL proxy Make sure the SSL proxy is configured the same way the HTTP proxy is configured: Conf...

Easy Install Go to http://pharo.org/download and select a fitting download and run it. Details There are a lot of different ways to install Pharo. Pharo itself consists of a vm and an image. In addition it needs its sources and plugins, and has some dependencies: It is a cross-platform environ...

List the contents of an archive file without extracting it: tar -tf archive.tar.gz Folder-In-Archive/ Folder-In-Archive/file1 Folder-In-Archive/Another-Folder/ Folder-In-Archive/Another-Folder/file2

installing pytest: pip install pytest getting the tests ready: mkdir tests touch tests/test_docker.py Functions to test in docker_something/helpers.py: from subprocess import Popen, PIPE # this Popen is monkeypatched with the fixture `all_popens` def copy_file_to_docker(src, dest): ...

Go supports user defined types in the form of structs and type aliases. structs are composite types, the component pieces of data that constitute the struct type are called fields. a field has a type and a name which must be unqiue. package main type User struct { ID uint64 FullName st...

because a struct is also a data type, it can be used as an anonymous field, the outer struct can directly access the fields of the embedded struct even if the struct came from a diffrent package. this behaviour provides a way to derive some or all of your implementation from another type or a set of...

You can install mocha either globally or in your project folder. The latter is the preferred way. In all the example let's assume that all the test files are in a test folder within the project folder. Install Mocha locally To install mocha in your project folder, you can use the following npm co...

Detailed instructions on getting split set up or installed.

We use the same dataset as with polyfit: npoints = 20 slope = 2 offset = 3 x = np.arange(npoints) y = slope * x + offset + np.random.normal(size=npoints) Now, we try to find a solution by minimizing the system of linear equations A b = c by minimizing |c-A b|**2 import matplotlib.pyplot as...

In tables recording events there is often a datetime field recording the time an event happened. Finding the single most recent event can be difficult because it's always possible that two events were recorded with exactly identical timestamps. You can use row_number() over (order by ...) to make su...

You use the FIRST_VALUE function to determine the first value in an ordered result set, which you identify using a scalar expression. SELECT StateProvinceID, Name, TaxRate,        FIRST_VALUE(StateProvinceID)         OVER(ORDER BY TaxRate ASC) AS FirstValue FROM SalesTaxRate; In this example,...

The LAST_VALUE function provides the last value in an ordered result set, which you specify using a scalar expression. SELECT TerritoryID, StartDate, BusinessentityID,        LAST_VALUE(BusinessentityID)          OVER(ORDER BY TerritoryID) AS LastValue FROM SalesTerritoryHistory; This example...

The PERCENT_RANK function calculates the ranking of a row relative to the row set. The percentage is based on the number of rows in the group that have a lower value than the current row. The first value in the result set always has a percent rank of zero. The value for the highest-ranked – or last...

var passport = require('passport'); var LocalStrategy = require('passport-local').Strategy; passport.serializeUser(function(user, done) { //In serialize user you decide what to store in the session. Here I'm storing the user id only. done(null, user.id); }); passport.deserializeUser(funct...

This is a complete example of all the commonly used SQLite related APIs. The aim is to get you up and running really fast. You can also get a runnable PHP file of of this tutorial. Creating/opening a database Let's create a new database first. Create it only if the file doesn't exist and open it f...