Tutorial by Examples: o

Cut a image into a circle - Objective C

import #include <math.h> The code in the viewDidLoad or loadView should look something look something like this - (void)loadView { [super loadView]; UIImageView *imageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 50, 320, 320)]; [self.view addSubview:imageView]; UIImage *image=[U...

iOS • Cut a UIImage into a circle

First program - "Hello World"

Copy paste this code and launch your program : @Theme(ValoTheme.THEME_NAME) //[optional] adds Vaadin built in theming public class SampleUI extends UI { @Override protected void init(VaadinRequest request) { final VerticalLayout rootLayout = new VerticalLayout(); Label...

vaadin • Getting started with vaadin

Negation

You may want to negate a boolean value, i.e. enter an if statement when a condition is false rather than true. This can be done by using the -Not CmdLet $test = "test" if (-Not $test -eq "test2"){ Write-Host "if condition not met" } You can also use !: $test...

PowerShell • Conditional logic

Specify the password

The basic usage is: mysql> CREATE USER 'my_new_user'@'localhost' IDENTIFIED BY 'test_password'; However for situations where is not advisable to hard-code the password in cleartext it is also possible to specify directly, using the directive PASSWORD, the hashed value as returned by the PASS...

MySQL • Create New User

Objective C code to make selected corner of a UiView rounded

First import #import <QuartzCore/QuartzCore.h> into your ViewController class. Here is how I set my view in code UIView *view1=[[UIView alloc]init]; view1.backgroundColor=[UIColor colorWithRed:255/255.0 green:193/255.0 blue:72/255.0 alpha:1.0]; CGRect view1Frame = view1.frame; view1Frame....

iOS • Make selective UIView corners rounded

Force a Test Crash With Fabric

Add a button you can tap to trigger a crash. Paste this code into your layout where you’d like the button to appear. <Button android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="Force Crash!" android:onClick=&quo...

Android • Crash Reporting Tools

Objective C code to convert HTML string to NSAttributedString and Vice Versa

HTML to NSAttributedString conversion Code :- //HTML String NSString *htmlString=[[NSString alloc]initWithFormat:@"<!DOCTYPE html><html><body><h1>My First Heading</h1><p>My first paragraph.</p></body></html>"]; //Converting HTML s...

iOS • Convert HTML to NSAttributed string and vice verse

Using PhantomData as a Type Marker

Using the PhantomData type like this allows you to use a specific type without needing it to be part of the Struct. use std::marker::PhantomData; struct Authenticator<T: GetInstance> { _marker: PhantomData<*const T>, // Using `*const T` indicates that we do not own a T } imp...

Rust • PhantomData

How many units do I have remaining?

In SuiteScript 1.0, use nlobjContext.getRemainingUsage() to retrieve the remaining units. An nlobjContext reference is retrieved using the global nlapiGetContext function. // 1.0 var context = nlapiGetContext(); nlapiLogExecution("DEBUG", "Governance Monitoring", "Remai...

netsuite • Governance

Simple usage for anything that has a Length member

let inline getLength s = (^a: (member Length: _) s) //usage: getLength "Hello World" // or "Hello World" |> getLength // returns 11

F# • Statically Resolved Type Parameters

Class, Interface, Record usage

// Record type Ribbon = {Length:int} // Class type Line(len:int) = member x.Length = len type IHaveALength = abstract Length:int let inline getLength s = (^a: (member Length: _) s) let ribbon = {Length=1} let line = Line(3) let someLengthImplementer = { new IHaveALength wit...

F# • Statically Resolved Type Parameters

Error types

There are six specific core error constructors in JavaScript: EvalError - creates an instance representing an error that occurs regarding the global function eval(). InternalError - creates an instance representing an error that occurs when an internal error in the JavaScript engine is thr...

JavaScript • Error Handling

Bucket Sort Basic Information

Bucket Sort is a sorting algorithm in which elements of input array are distributed in buckets. After distributing all the elements, buckets are sorted individually by another sorting algorithm. Sometimes it is also sorted by recursive method. Pseudo code for Bucket Sort Let n be the length of t...

algorithm • Bucket Sort

Merge Sort Implementation in C & C#

C Merge Sort int merge(int arr[],int l,int m,int h) { int arr1[10],arr2[10]; // Two temporary arrays to hold the two arrays to be merged int n1,n2,i,j,k; n1=m-l+1; n2=h-m; for(i=0; i<n1; i++) arr1[i]=arr[l+i]; for(j=0; j<n2; j++) arr2[j]=arr[m+j+1]; arr...

algorithm • Merge Sort

Quicksort Basics

Quicksort is a sorting algorithm that picks an element ("the pivot") and reorders the array forming two partitions such that all elements less than the pivot come before it and all elements greater come after. The algorithm is then applied recursively to the partitions until the list is so...

algorithm • Quicksort

Const Correctness as Documentation

One of the more useful things about const correctness is that it serves as a way of documenting code, providing certain guarantees to the programmer and other users. These guarantees are enforced by the compiler due to constness, with a lack of constness in turn indicating that code doesn't provide...

C++ • Const Correctness

Simple Drop Implementation

use std::ops::Drop; struct Foo(usize); impl Drop for Foo { fn drop(&mut self) { println!("I had a {}", self.0); } }

Rust • The Drop Trait - Destructors in Rust

Drop for Cleanup

use std::ops::Drop; #[derive(Debug)] struct Bar(i32); impl Bar { fn get<'a>(&'a mut self) -> Foo<'a> { let temp = self.0; // Since we will also capture `self` we.. // ..will have to copy the value out first Foo(self, temp) ...

Rust • The Drop Trait - Destructors in Rust

Setting place type filters for PlaceAutocomplete

In some scenarios, we might want to narrow down the results being shown by PlaceAutocomplete to a specific country or maybe to show only Regions. This can be achieved by setting an AutocompleteFilter on the intent. For example, if I want to look only for places of type REGION and only belonging to I...

Android • Android Places API

Creating a shared link for a file using curl in PHP

<?php $parameters = array('path' => '/test.txt'); $headers = array('Authorization: Bearer <ACCESS_TOKEN>', 'Content-Type: application/json'); $curlOptions = array( CURLOPT_HTTPHEADER => $headers, CURLOPT_POST => true, CURLOPT_PO...

Dropbox API • Getting a shared link for a file or folder