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Printing a variable memory address in swift
...riteString:(void **)var
{
NSMutableString *aString = [[NSMutableString alloc] initWithFormat:@"pippo %@", @"pluto"];
*var = (void *)CFBridgingRetain(aString); // Retain!
}
// swift side
var opaque = COpaquePointer.null() // create a new opaque pointer pointing to null
TestClass.writeStr...
How to enable mod_rewrite for Apache 2.2
...NAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
The above .htaccess file (if placed in your DocumentRoot) will redirect all traffic to an index.php file in the DocumentRoot unless the file exists.
So, let's say you have the following directory ...
Cookies on localhost with explicit domain
...ting it to "" or NULL or FALSE instead of "localhost" is not enough.
For PHP, see comments on http://php.net/manual/en/function.setcookie.php#73107.
If working with the Java Servlet API, don't call the cookie.setDomain("...") method at all.
...
Overriding class constants vs properties
... and always refers to the class it is being executed in. If you are using php5.3+ you might try static::TEST as static:: is inheritance-aware.
The difference is that static:: uses "late static binding". Find more information here:
http://php.net/manual/en/language.oop5.late-static-bindings.php
...
shared_ptr to an array : should it be used?
...
With C++17, shared_ptr can be used to manage a dynamically allocated array. The shared_ptr template argument in this case must be T[N] or T[]. So you may write
shared_ptr<int[]> sp(new int[10]);
From n4659, [util.smartptr.shared.const]
template<class Y> explicit sh...
Display an array in a readable/hierarchical format
...
<?php foreach($data[0] as $child) { echo $child . "<br />"; }?> this worked great thanks Brian !
– Xavier
Mar 22 '11 at 14:58
...
Why doesn't this code simply print letters A to Z?
...
From the docs:
PHP follows Perl's convention when dealing with arithmetic operations on character variables and not C's.
For example, in Perl 'Z'+1 turns into 'AA', while in C 'Z'+1 turns into '[' ( ord('Z') == 90, ord('[') == 91 ).
Note th...
Why historically do people use 255 not 256 for database field magnitudes?
...nagement likes powers of 2. see: stackoverflow.com/questions/3190146/… Allocating char foo[257] will either fragment memory or take up 512 bytes.
– ebyrob
Jan 26 '17 at 17:11
4...
When does a process get SIGABRT (signal 6)?
...detect an internal error or some seriously broken constraint. For example malloc() will call abort() if its internal structures are damaged by a heap overflow.
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How to change the blue highlight color of a UITableViewCell?
...t will present as the selected background view.
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
UIView *selectionColor = [[UIView alloc] init];
selectionColor.backgroundColor = [UIColor colorWithRed:(245/255.0) green:(245/255.0) blue:...