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How do I remove code duplication between similar const and non-const member functions?
...using const_cast instead of static_cast to add const since it prevents you from changing the type accidentally.
– Greg Rogers
Nov 23 '08 at 7:49
7
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Calling a method every x minutes
...
var startTimeSpan = TimeSpan.Zero;
var periodTimeSpan = TimeSpan.FromMinutes(5);
var timer = new System.Threading.Timer((e) =>
{
MyMethod();
}, null, startTimeSpan, periodTimeSpan);
share
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Visual Studio keyboard shortcut to automatically add the needed 'using' statement
...LL file, then ReSharper is able to see that the TestFixtureAttribute comes from that DLL file, so it will automatically add that assembly reference to your new project.
And it also adds required namespaces for extension methods. At least the ReSharper version 5 beta does. I'm pretty sure that Visua...
Why do we need tuples in Python (or any immutable data type)?
... -- we were able to shave off over an hour of data processing by switching from lists to tuples.
– Mark Ribau
Jul 1 '13 at 20:34
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show 7 mo...
How to convert a string to integer in C?
...mp;& errno == ERANGE)
/* Could not convert. */
Anyway, stay away from atoi:
The call atoi(str) shall be equivalent to:
(int) strtol(str, (char **)NULL, 10)
except that the handling of errors may differ. If the value cannot be
represented, the behavior is undefined.
...
How to check visibility of software keyboard in Android?
...d/activityRoot, hook a GlobalLayoutListener into the ViewTreeObserver, and from there calculate the size diff between your activity's view root and the window size:
final View activityRootView = findViewById(R.id.activityRoot);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new On...
Can we write our own iterator in Java?
...interface. If you're using an existing iterable object (say, a LinkedList) from java.util, you'll need to either subclass it and override its iterator function so that you return your own, or provide a means of wrapping a standard iterator in your special Iterator instance (which has the advantage o...
Is there a simple way to remove multiple spaces in a string?
... Yes right. But before that strip() should be done. It will remove spaces from both end.
– Hardik Patel
Dec 29 '16 at 12:46
20
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How to asynchronously call a method in Java
...nied by SecurityManager.
FutureTask is a good option as the other options from the java.util.concurrent package.
My favorite for simple tasks:
Executors.newSingleThreadExecutor().submit(task);
little bit shorter than creating a Thread (task is a Callable or a Runnable)
...
Rails “validates_uniqueness_of” Case Sensitivity
...t for the new record and fail with a ugly server exception that comes back from the SQL adapter. If you do not have a database constraint, the insert will succeed and you now have two rows with 'foo' as the name.
See also "Concurrency and integrity" in the validates_uniqueness_of Rails documentat...