If your project depends on the external libraries, you should first install them with opam.
Assuming your dependencies are foo and bar and the main entry point of your project is foobar.ml you can then build a bytecode executable with
ocamlbuild -use-ocamlfind -pkgs 'foo,bar' foobar.byte
Warnin...
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...
In attempt to send a response asynchronously from chrome.runtime.onMessage callback we might try this wrong code:
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
$.ajax({
url: 'https://www.google.com',
method: 'GET',
success: functio...
Homebrew
You can install Node.js using the Homebrew package manager.
Start by updating brew:
brew update
You may need to change permissions or paths. It's best to run this before proceeding:
brew doctor
Next you can install Node.js by running:
brew install node
Once Node.js is installe...
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.
Using filterUsingPredicate: This Evaluates a given predicate against the arrays content and return objects that match.
Example:
NSMutableArray *array = [NSMutableArray array];
[array setArray:@[@"iOS",@"macOS",@"tvOS"]];
NSPredicate *predicate = [N...
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...
Int("123") // Returns 123 of Int type
Int("abcd") // Returns nil
Int("10") // Returns 10 of Int type
Int("10", radix: 2) // Returns 2 of Int type
Double("1.5") // Returns 1.5 of Double type
Double("abcd") // Returns nil
Note that do...
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...
When dividing two numbers pay attention to the type you want in return. Note that dividing two integers will invoke the integer division. If your goal is to run the float division, at least one of the parameters should be of float type.
Integer division:
3 / 2 # => 1
Float division
3 / 3.0 ...
To send an immediate message with data to JavaScript, you have to trigger an action from your init.
init : ( Model, Cmd Msg )
init =
( Model 0, send SendOutgoing )
send : msg -> Cmd msg
send msg =
Task.perform identity identity (Task.succeed msg)
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...
