Tutorial by Examples: p

Convert in uppercase the string argument Syntax: UPPER(str) UPPER('fOoBar') -- 'FOOBAR' UCASE('fOoBar') -- 'FOOBAR'

Native Canvas API does not have a method to wrap text onto the next line when a desired maximum width is reached. This example wraps text into paragraphs. function wrapText(text, x, y, maxWidth, fontSize, fontFace){ var firstY=y; var words = text.split(' '); var line = ''; var lineHeigh...

This example draws text paragraphs into any portions of the canvas that have opaque pixels. It works by finding the next block of opaque pixels that is large enough to contain the next specified word and filling that block with the specified word. The opaque pixels can come from any source: Path d...

Classes, structs, enums and all their methods are internal by default. This means they can be only accessed from the same module. The test cases are in a different target an this means they are in a different module. To be able to access the method you want to test, you need to import the module to ...

If you want to add a Drawable be shown during the load, you can add a placeholder: Glide.with(context) .load(yourUrl) .placeholder(R.drawable.placeholder) .into(imageView); If you want a Drawable to be shown if the load fails for any reason: Glide.with(context) .load(yourUrl...

View loading In a test for a view controller you want sometimes to trigger the execution of loadView() or viewDidLoad(). This can be done by accessing the view. Let's say you have view controller instance in your test called sut (system under test), then the code would look like this: XCTAssertNot...

In its simplest form supported by all versions of bash, case statement executes the case that matches the pattern. ;; operator breaks after the first match, if any. #!/bin/bash var=1 case $var in 1) echo "Antartica" ;; 2) echo "Brazil" ;; 3) echo "Cat&qu...

4.0 Since Bash 4.0, another operator ;;& was introduced which also provides fall through only if the patterns in subsequent case statement(s), if any, match. #!/bin/bash var=abc case $var in a*) echo "Antartica" ;;& xyz) echo "Brazil" ;;& *b*) ...

This is an advanced example. You can use variant for light weight type erasure. template<class F> struct pseudo_method { F f; // enable C++17 class type deduction: pseudo_method( F&& fin ):f(std::move(fin)) {} // Koenig lookup operator->*, as this is a pseudo-method...

Lambda Expresions are an extension of anonymous methods that allow for implicitly typed parameters and return values. Their syntax is less verbose than anonymous methods and follows a functional programming style. using System; using System.Collections.Generic; using System.Linq; ...

With IpRateLimit middleware you can set multiple limits for different scenarios like allowing an IP or IP range to make a maximum number of calls in a time interval like per second, 15 minutes, etc. You can define these limits to address all requests made to an API or you can scope the limits to eac...

To add a Swipe To Refresh layout with a RecyclerView add the following to your Activity/Fragment layout file: <android.support.v4.widget.SwipeRefreshLayout android:id="@+id/refresh_layout" android:layout_width="match_parent" android:layout_height="match_pa...

Increment by var a = 9, b = 3; b += a; b will now be 12 This is functionally the same as b = b + a; Decrement by var a = 9, b = 3; b -= a; b will now be 6 This is functionally the same as b = b - a; Multiply by var a = 5, b = 3; b *= a; b will now...

The original C standard had no intrinsic Boolean type, so bool, true and false had no inherent meaning and were often defined by programmers. Typically true would be defined as 1 and false would be defined as 0. C99 C99 adds the built-in type _Bool and the header <stdbool.h> which defines bo...

It is unlikely that someone uses an unsupported version of Django, and at his own risks. If ever someone does, it must be his concern to know if a feature exists in the given version. Considering the above, it is useless to mention specificities of an unsupported version. 1.6 This kind of block i...

It's possible to clear complex shaped regions by changing the globalCompositeOperation property. // All pixels being drawn will be transparent ctx.globalCompositeOperation = 'destination-out'; // Clear a triangular section ctx.globalAlpha = 1; // ensure alpha is 1 ctx.fillStyle = '#000'; /...

There are multiple ways of adding data to a object in fxml: <property> tag A tag with the name of a property can be added as child of an element used for creating a instance. The child of this tag is assigned to the property using the setter or added to the contents of the property (readonly...

Hi everyone! This is a demo I love running for people that get started with BigQuery. So let's run some simple queries to get you started. Setup You will need a Google Cloud project: Go to http://bigquery.cloud.google.com/. If it tells you to create a project, follow the link to create a proje...

In R, data objects are manipulated using named data structures. The names of the objects might be called "variables" although that term does not have a specific meaning in the official R documentation. R names are case sensitive and may contain alphanumeric characters(a-z,A-z,0-9), the dot...

This is a mistake that causes real confusion for Java beginners, at least the first time that they do it. Instead of writing this: if (feeling == HAPPY) System.out.println("Smile"); else System.out.println("Frown"); they accidentally write this: if (feeling == HAP...