Tutorial by Examples: l

Swift Add this extension to UIImage : extension UIImage { func maskWithColor(color: UIColor) -> UIImage? { let maskImage = self.CGImage let width = self.size.width let height = self.size.height let bounds = CGRectMake(0, 0, width, height) ...

with q command we could simplify a lot of tedious work in vim. example 1. generate array sequence (1 to 20). STEP 1. press i to enter insert mode, input 1 1 STEP 2. Record following action: "append the last number to the next line, and increment the number" type esc to exit input...

import scala.reflect.runtime.universe._ val mirror = runtimeMirror(getClass.getClassLoader) val module = mirror.staticModule("org.data.TempClass")

ActiveRecord pattern was popularized by Rails. It's the default ORM there. Conventions Rails ActiveRecord is driven by conventions: class names are mapped to table names, field names are mapped to field names, foreign and primary keys should be named accordingly. These conventions can be overridde...

Following example also have explanation required for understanding example within it. import java.time.Clock; import java.time.Duration; import java.time.Instant; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.ZoneId; import java.time...

First of all you need to have IIS (Internet Information Services) installed and running on your machine; IIS isn't available by default, you have to add the characteristic from Control Panel -> Programs -> Windows Characteristics. Download the PHP version you like from http://windows.php.ne...

You may often find the need to get the auto incremented ID value for a row that you have just inserted into your database table. You can achieve this with the lastInsertId() method. // 1. Basic connection opening (for MySQL) $host = 'localhost'; $database = 'foo'; $user = 'root' $password = ''...

Detailed instructions on getting odata set up or installed.

Detailed instructions on getting opengl-es set up or installed.

The Compat.jl package enables using some new Julia features and syntax with older versions of Julia. Its features are documented on its README, but a summary of useful applications is given below. 0.5.0 Unified String type In Julia v0.4, there were many different types of strings. This system was...

app.component.ts: import {Component,OnInit} from "@angular/core"; import placeholder = require("ui/placeholder"); let application= require("application"); @Component({ selector: "my-app", templateUrl: "app.component.html", }) export...

If the SQL statement is constructed like this: SQL = "SELECT * FROM Users WHERE username = '" + user + "' AND password ='" + pw + "'"; db.execute(SQL); Then a hacker could retrieve your data by giving a password like pw' or '1'='1; the resulting SQL statement will ...

Assuming you have the following directory of files: You can setup a web server to serve these files as follows: Python 2.x2.3 import SimpleHTTPServer import SocketServer PORT = 8000 handler = SimpleHTTPServer.SimpleHTTPRequestHandler httpd = SocketServer.TCPServer(("localhost"...

Without replacement With combn, each vector appears in a column: combn(LETTERS, 3) # Showing only first 10. [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [1,] "A" "A" "A" "A" "A" "A" "A" "A" &quo...

Box boxlty - box line type boxlwd - box line width boxcol - box line color boxfill - box fill colors Median medlty - median line type ("blank" for no line) medlwd - median line widht medcol - median line color medpch - median point (NA for no symbol) medcex - median point s...

fn is_prime(n: u64) -> bool { (2..n).all(|divisor| n % divisor != 0) } Of course this is isn't a fast test. We can stop testing at the square root of n: (2..n) .take_while(|divisor| divisor * divisor <= n) .all(|divisor| n % divisor != 0)

Without replacement choose(length(LETTERS), 5) [1] 65780 With replacement length(letters)^5 [1] 11881376

When the app is based on more than one criteria, instead of creating a lot of flavors you can define flavor dimensions. The flavor dimensions define the cartesian product that will be used to produce variants. Example: flavorDimensions("dimA", "dimB") productFlavors { ...

You can set the behavior of the FAB in XML. For example: <android.support.design.widget.FloatingActionButton app:layout_behavior=".MyBehavior" /> Or you can set programmatically using: CoordinatorLayout.LayoutParams p = (CoordinatorLayout.LayoutParams) fab.getLayoutPara...

Use the following commands to create bookmarks and access bookmarks from within Emacs. Let us say that you are editing a file called foobar.org and suppose that you visit this file frequently to edit / view contents. It would be convenient to access this file with couple of key strokes rather than...