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Difference between std::system_clock and std::steady_clock?
...n the standard where that is the case? It seems to clearly indicate the opposite.
– Billy ONeal
Sep 9 '15 at 18:56
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Running a cron every 30 seconds
...go down to sub-minute resolutions, you will need to find another way.
One possibility, though it's a bit of a kludge(a), is to have two jobs, one offset by 30 seconds:
# Need these to run on 30-sec boundaries, keep commands in sync.
* * * * * /path/to/executable param1 param2
* * * * * ...
How do I associate file types with an iPhone application?
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File type handling is new with iPhone OS 3.2, and is different than the already-existing custom URL schemes. You can register your application to handle particular document types, and any application that uses a document controller can hand off processing of the...
Detecting that the browser has no mouse and is touch-only
...S know when a user plugs in a mouse/connects to a keyboard, but doesn't expose it to JavaScript.. dang!
This should lead you to the following:
Tracking the current capabilities of a given user is complex, unreliable, and of dubious merit
The idea of progressive enhancement applies quite well ...
When would I need a SecureString in .NET?
I'm trying to grok the purpose of .NET's SecureString. From MSDN:
11 Answers
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What is JavaScript garbage collection?
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Eric Lippert wrote a detailed blog post about this subject a while back (additionally comparing it to VBScript). More accurately, he wrote about JScript, which is Microsoft's own implementation of ECMAScript, although very similar to JavaScript. I would imagine...
Scheduling recurring task in Android
...od completes. If your alarm receiver called Context.startService(), it is possible that the phone will sleep before the requested service is launched. To prevent this, your BroadcastReceiver and Service will need to implement a separate wake lock policy to ensure that the phone continues running unt...
Weak and strong property setter attributes in Objective-C
...give best answers here!!
Variable property attributes or Modifiers in iOS
01.strong (iOS4 = retain )
- it says "keep this in the heap until I don't point to it anymore"
- in other words " I'am the owner, you cannot dealloc this before aim fine with that same as retain"
- You use st...
Check if at least two out of three booleans are true
...(b || c) || (b && c);
}
It tests a and b exactly once, and c at most once.
References
JLS 15.25 Conditional Operator ? :
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Escape double quotes in parameter
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Windows: the OS where globbing, shell expansion, and parameter unescaping is performed by the executable being invoked instead of the shell. You never know which convention, if any, the invoked executable honours.
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