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Objective-C ARC: strong vs retain and weak vs assign
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@Pascal: weak references aren't allowed in deployment targets where the os is not 5.0 or higher. So for older projects you can still use assign, but if you move to newer versions you have to switch to weak
– Mattia
Feb...
Constructor in an Interface?
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but note that the use case @Sebi describes (calling overloaded methods from parent constructors) is a bad idea as explained in my answer.
– rsp
May 10 '10 at 15:57
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Adding hours to JavaScript Date object?
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JavaScript itself has terrible Date/Time API's. Nonetheless, you can do this in pure JavaScript:
Date.prototype.addHours = function(h) {
this.setTime(this.getTime() + (h*60*60*1000));
return this;
}
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Should I be using object literals or constructor functions?
....bar;
}
However, this is not favorable with regards to encapsulation: Ideally, all the data + behaviour associated with an entity should live together.
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How do I convert between big-endian and little-endian values in C++?
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If you're using Visual C++ do the following: You include intrin.h and call the following functions:
For 16 bit numbers:
unsigned short _byteswap_ushort(unsigned short value);
For 32 bit numbers:
unsigned long _byteswap_ulong(unsigned long value);
For 64 bit numbers:
unsigned __int64 _byt...
Does the APNS device token ever change, once created?
...hat device.
If the user restores backup data to a new device or reinstalls the
operating system, the device token changes.
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How to get list of all installed packages along with version in composer?
... my local machine. I have uploaded it to my server but when I try and install the vendor bundles using Composer, I'm getting a lot of dependency errors. Presumably this is something to do with the latest version of Symfony just being released and my composer.json file not specifying exact versio...
Python __str__ versus __unicode__
...onfusing, but in 2.x we're stuck with them for compatibility reasons. Generally, you should put all your string formatting in __unicode__(), and create a stub __str__() method:
def __str__(self):
return unicode(self).encode('utf-8')
In 3.0, str contains characters, so the same methods are nam...
How to divide flask app into multiple py files?
...c resources: templates or static files. Please refer to the Flask docs for all the details.
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Is there a TRY CATCH command in Bash
... writing a shell script and need to check that a terminal app has been installed. I want to use a TRY/CATCH command to do this unless there is a neater way.
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