Dictionaries are implemented in a Dict core library.
A dictionary mapping unique keys to values. The keys can be any
comparable type. This includes Int, Float, Time, Char, String, and
tuples or lists of comparable types.
Insert, remove, and query operations all take O(log n) time.
Unlike Tu...
For named (non-anonymous) functions, you can break when the function is executed.
debug(functionName);
The next time functionName function runs, the debugger will stop on its first line.
We will see how to center content based on the height of a near element.
Compatibility: IE8+, all other modern browsers.
HTML
<div class="content">
<div class="position-container">
<div class="thumb">
<img src="http://lorempix...
The caption-side property determines the vertical positioning of the <caption> element within a table. This has no effect if such element does not exist.
Below an example with two tables with different values set to the caption-side property:
The table on the left has caption-side: top whi...
Installing Visual Studio
If you do not have Visual Studio installed, you can download the free Visual Studio Community Edition here. If you already have it installed, you can proceed to the next step.
Creating an ASP.NET Core MVC Application.
Open Visual Studio.
Select File > New Project.
...
Factories can be used in conjunction with Inversion of Control (IoC) libraries too.
The typical use case for such a factory is when we want to create an object based on parameters that are not known until run-time (such as the current User).
In these cases it can be sometimes be difficult (if no...
Enumerating dictionaries allows you to run a block of code on each dictionary key-value pair using the method enumerateKeysAndObjectsUsingBlock:(void (^)(id key, id obj, BOOL *stop))block
Example:
NSDictionary stockSymbolsDictionary = @{
@"AAPL":...
For annotating some point of interest on map, we use pin annotation. Now, start by creating annotation object first.
MKPointAnnotation *pointAnnotation = [[MKPointAnnotation alloc] init];
Now provide coordinate to pointAnnotation,as
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake...
Detailed instructions on getting laravel set up or installed.
composer is required for installing laravel easily.
There are 3 methods of installing laravel in your system:
Via Laravel Installer
Download the Laravel installer using composer
composer global require "laravel/installer&quo...
Mapreduce is a part of Hadoop. So when Apache Hadoop (or any distribution of Hadoop is installed) MR is automatically installed.
MapReduce is the data processing framework over HDFS(Hadoop distributed file system). MR jobs maybe written using Java, python, Scala, R, etc.
Swift 3:
let minimumVersion = OperatingSystemVersion(majorVersion: 8, minorVersion: 1, patchVersion: 2)
if ProcessInfo().isOperatingSystemAtLeast(minimumVersion) {
//current version is >= (8.1.2)
} else {
//current version is < (8.1.2)
}
let minimumVersionString = "3.1.3"
let versionComparison = UIDevice.current.systemVersion.compare(minimumVersionString, options: .numeric)
switch versionComparison {
case .orderedSame, .orderedDescending:
//current version is >= (3.1.3)
break
case .orderedA...
The extension 'realurl' provides complete transformation of URLs with GET parameter in the browser, like “index.php?id=123&type=0&L=1” into a virtual path, a so called “Speaking URL” like “home/about-us/index.html” and back again. The objective is that URLs shall be as human readable as poss...
In this example we will calculate the squared deviance for each column in a data frame, in this case the mtcars.
Option A: integer index
squared_deviance <- vector("list", length(mtcars))
for (i in seq_along(mtcars)){
squared_deviance[[i]] <- (mtcars[[i]] - mean(mtcars[[i]]))^2...
To illustrate the effect of good for loop construction, we will calculate the mean of each column in four different ways:
Using a poorly optimized for loop
Using a well optimized for for loop
Using an *apply family of functions
Using the colMeans function
Each of these options will be shown...
A distinctive syntactic peculiarity of C is that declarations mirror the use of the declared object as it would be in a normal expression.
The following set of operators with identical precedence and associativity are reused in declarators, namely:
the unary * "dereference" operator wh...
These examples assume that you already know what Java 7's NIO is in general, and you are used to writing code using java.io.File. Use these examples as a means to quickly find more NIO-centric documentation for migrating.
There is much more to Java 7's NIO such as memory-mapped files or opening a Z...
