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Objective-C : BOOL vs bool
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From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned-c...
Check if a folder exist in a directory and create them using C#
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This should help:
using System.IO;
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string path = @"C:\MP_Upload";
if(!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
share
|
impro...
Check if object is file-like in Python
..., e.g. have a read() and a write method(), but have a different implementation. It is and realization of the Duck Typing concept.
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HTML5 Canvas Resize (Downscale) Image High Quality?
... - fast image resize/resample using Hermite filter. 1 cpu version!
*
* @param {HtmlElement} canvas
* @param {int} width
* @param {int} height
* @param {boolean} resize_canvas if true, canvas will be resized. Optional.
*/
function resample_single(canvas, width, height, resize_canvas) {
var...
Difference between case object and object
...ar classes in that they get:
pattern matching support
default implementations of equals and hashCode
default implementations of serialization
a prettier default implementation of toString, and
the small amount of functionality that they get from automatically inheriting from scala.Product.
Pa...
How do I get the current absolute URL in Ruby on Rails?
...ApplicationController to return the current URL and allow merging in other parameters
# https://x.com/y/1?page=1
# + current_url( :page => 3 )
# = https://x.com/y/1?page=3
def current_url(overwrite={})
url_for :only_path => false, :params => params.merge(overwrite)
end
Example Usage...
How to serialize an object into a string
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Sergio:
You should use BLOB. It is pretty straighforward with JDBC.
The problem with the second code you posted is the encoding. You should additionally encode the bytes to make sure none of them fails.
If you still want to ...
Open an IO stream from a local file or url
... contains either a path to a local file or a url and open it as a readable IO stream.
1 Answer
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C++ preprocessor __VA_ARGS__ number of arguments
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I usually use this macro to find a number of params:
#define NUMARGS(...) (sizeof((int[]){__VA_ARGS__})/sizeof(int))
Full example:
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#define NUMARGS(...) (sizeof((int[]){__VA_ARGS__})/size...
What is the difference between Pan and Swipe in iOS?
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By definition, a swipe gesture is necessarily also a pan gesture -- both involve translational movement of touch points. The difference is in the recognizer semantics: a pan recognizer looks for the beginning of translational movement ...