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Angular also provides some CSS classes for forms and inputs depending on their state ClassDescriptionng-touchedField has been touchedng-untouchedField has not been touchedng-pristineField has not been modifiedng-dirtyField has been modifiedng-validField is validng-invalidField is invalid You can u...

To help you find and count characters in a string, CharMatcher provides the following methods: int indexIn(CharSequence sequence) Returns the index of the first character that matches the CharMatcher instance. Returns -­1 if no character matches. int indexIn(CharSequence sequence, int sta...

var source = new AutoCompleteStringCollection(); // Add your collection of strings. source.AddRange(new[] { "Guybrush Threepwood", "LeChuck" }); var textBox = new TextBox { AutoCompleteCustomSource = source, AutoCompleteMode = AutoCompleteMode.SuggestAppend, ...

textBox.KeyPress += (sender, e) => e.Handled = !char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar); This will only permit the use of digits and control characters in the TextBox, other combinations are possible using the same approach of setting the Handle property to true to block ...

textBox.SelectionStart = textBox.TextLength; textBox.ScrollToCaret(); Applying the same principle, SelectionStart can be set to 0 to scroll to the top or to a specific number to go to a specific character.

// Initialize a stack object of integers var stack = new Stack<int>(); // add some data stack.Push(3); stack.Push(5); stack.Push(8); // elements are stored with "first in, last out" order. // stack from top to bottom is: 8, 5, 3 // We can use peek to see the top elemen...

// initialize a LinkedList of integers LinkedList list = new LinkedList<int>(); // add some numbers to our list. list.AddLast(3); list.AddLast(5); list.AddLast(8); // the list currently is 3, 5, 8 list.AddFirst(2); // the list now is 2, 3, 5, 8 list.RemoveFirst(); // the list...

A StringBuilder represents a series of characters, which unlike a normal string, are mutable. Often times there is a need to modify strings that we've already made, but the standard string object is not mutable. This means that each time a string is modified, a new string object needs to be created,...

Type Annotations // There should be one space after the colon of the type // annotation. This rule applies in variable declarations, // struct fields, functions and methods. // GOOD: let mut buffer: String = String::new(); // BAD: let mut buffer:String = String::new(); let mut buffer : Str...

You can install the postgreSQL adapter via NPM. npm install sails-postgresql

Short circuiting is a functionality that skips evaluating parts of a (if/while/...) condition when able. In case of a logical operation on two operands, the first operand is evaluated (to true or false) and if there is a verdict (i.e first operand is false when using &&, first operand is tr...

If you are using Leiningen and your tests are located in the test directory in your project root then you can run your tests using lein test

OSX Implement the contract of the role-specific protocol (NSAccessibilityButton, NSAccessibilityImage, NSAccessibilityGroup, etc) within the NSAccessibility protocol that best matches the behavior of the GUI element being rendered. Linux / BSD For GNOME applications, the GNOME Accessibility Impl...

The most common way is to apply the extension via Config. Example: # File: mysite/_config/config.yml Member: extensions: - MyMemberExtension The extensions config variable is of type "array", so you can add multiple extensions like this: # File: mysite/_config/config.yml Mem...

Some procedures have optional arguments. Optional arguments always come after required arguments, but the procedure can be called without them. For example, if the function, ProcedureName were to have two required arguments (argument1, argument2), and one optional argument, optArgument3, it could b...

library(gpuR) # gpuMatrix objects X <- gpuMatrix(rnorm(100), 10, 10) Y <- gpuMatrix(rnorm(100), 10, 10) # transfer data to GPU when operation called # automatically copied back to CPU Z <- X %*% Y

library(gpuR) # vclMatrix objects X <- vclMatrix(rnorm(100), 10, 10) Y <- vclMatrix(rnorm(100), 10, 10) # data always on GPU # no data transfer Z <- X %*% Y

TRACE and DEBUG log levels are there to be able to convey high detail about the operation of the given code at runtime. Setting the log level above these is usually recommended, however some care must be taken for these statements to not affect performance even when seemingly "turned off"....

RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !(.*)/$ RewriteRule ^(.*)$ /$1/ [L,R=301] The first RewriteCond helps exclude the files. The second RewriteCond checks if there is already a trailing slash. If the case is so RewriteRule is not applied. If you have any URL that s...

Download the Apache Felix Framework Distribution and extract it into a directory: $ tar xf org.apache.felix.main.distribution-5.4.0.tar.gz $ cd felix-framework-5.4.0 And then start the framework with the following command: $ java -jar bin/felix.jar ____________________________ Welcome to...