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Programmatically change UITextField Keyboard type
...
There is a keyboardType property for a UITextField:
typedef enum {
UIKeyboardTypeDefault, // Default type for the current input method.
UIKeyboardTypeASCIICapable, // Displays a keyboard which can enter ASCII characters, non...
How to track down a “double free or corruption” error
...n set this from gdb by using the set environment MALLOC_CHECK_ 2 command before running your program; the program should abort, with the free() call visible in the backtrace.
see the man page for malloc() for more information
...
How can mixed data types (int, float, char, etc) be stored in an array?
... is used to hold the choice of which member of the union is should be used for each array element. So if you want to store an int in the first element, you would do:
my_array[0].type = is_int;
my_array[0].val.ival = 3;
When you want to access an element of the array, you must first check the type...
How can I select and upload multiple files with HTML and PHP, using HTTP POST?
...title>Test</title>
</head>
<body>
<form method="post" enctype="multipart/form-data">
<input type="file" name="my_file[]" multiple>
<input type="submit" value="Upload">
</form>
<?php
if...
Quickest way to convert a base 10 number to any base in .NET?
...n array as buffer instead of
/// string concatenation. This is faster for return values having
/// a length > 1.
/// </summary>
public static string IntToStringFast(int value, char[] baseChars)
{
// 32 is the worst cast buffer size for base 2 and int.MaxValue
...
How to list all functions in a Python module?
...em the class you wish to see the documentation of. They can also generate, for instance, HTML output and write it to disk.
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How to use C++ in Go
...e makefile is no longer required. The unsafe.Pointer wrappers did not work for me. A slight modification compiled for me: play.golang.org/p/hKuKV51cRp go test should work without the makefile
– Drew
Jun 21 '15 at 21:00
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What is “android.R.layout.simple_list_item_1”?
.../R.layout.html
(Updated link thanks @Estel: https://github.com/android/platform_frameworks_base/tree/master/core/res/res/layout )
You can actually view the code for the layouts.
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String concatenation: concat() vs “+” operator
...ill silently convert the argument to a String (using the toString() method for objects). So the concat() method is more strict in what it accepts.
To look under the hood, write a simple class with a += b;
public class Concat {
String cat(String a, String b) {
a += b;
return a;
...
Using mixins vs components for code reuse in Facebook React
...s Are Dead. Long Live Composition
At first, I tried to use subcomponents for this and extract FormWidget and InputWidget. However, I abandoned this approach halfway because I wanted a better control over generated inputs and their state.
Two articles that helped me most:
Thinking in React mad...