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cleanest way to skip a foreach if array is empty [duplicate]
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Not if initializing from a function/method. $items = get_stuff(). It's easier just to cast and falsy variables return an empty array.
– Keyo
Oct 4 '11 at 22:41
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ssh: Could not resolve hostname [hostname]: nodename nor servname provided, or not known
...rry Pi, and the first step is gaining the ability to ssh into the device from outside my local network. For whatever reason, this is proving to be impossible and I haven't the slightest clue why. When I try to ssh into my server with user@hostname , I get the error:
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Conditionally use 32/64 bit reference when building in Visual Studio
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The solution works for the default configuration, but not from my testing not if you change the configuration from the configuration from the Visual Studio (2012 in my case) Solution Configuration dropdown list.
– Sarah Weinberger
Jul 22 '13 at...
iPhone SDK: what is the difference between loadView and viewDidLoad?
... ahhhh, thank you for an explanation, finally! I've shied away from the idiom of allocating a temporary variable, then setting to self.view, then releasing...it seemed somehow awkward, unnecessary. I can now understand why that decision would have led me down the path where I now find m...
What are the differences between Abstract Factory and Factory design patterns?
...xample below we design an interface so that we can decouple queue creation from a messaging system and can therefore create implementations for different queue systems without having to change the code base.
interface IMessageQueueFactory
{
IMessageQueue CreateOutboundQueue(string name);
IMessa...
Comparing HTTP and FTP for transferring files
... The performance comparison link points to an analysis of expected gains from implementing P-HTTP, T/TCP, and S-TCB. No where does it mention FTP. Also, the properly tuned link is broken.
– Trisped
Feb 13 '13 at 1:04
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Detect 7 inch and 10 inch tablet programmatically
...ayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
From this, we can get the information required to size the display:
int widthPixels = metrics.widthPixels;
int heightPixels = metrics.heightPixels;
This will return the absolute value of the width and the height in pixels,...
git stash changes apply to new branch?
...inbotham no the Working Directory is common between branches and is copied from one to another when you pass from one branch to another. For "achieving" what you want I usually make different stashes, adding useful description with the git stash save "description" command mentioned previously; and t...
Converting Dictionary to List? [duplicate]
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When I tried to access the list resulting from dictlist=dict.items(), I then got an error trying to access it like a list: dictlist[i][1]. Python3 doc says: ~~~~ "The objects returned by dict.keys(), dict.values() and dict.items() are view objects. They provide a dy...
defaultdict of defaultdict?
... d[Key_doesnt_exist] will be defaultdict(int).
If you try to access a key from this last defaultdict i.e. d[Key_doesnt_exist][Key_doesnt_exist] it will return 0, which is the return value of the argument of the last defaultdict i.e. int().
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