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C# 4.0: Can I use a TimeSpan as an optional parameter with a default value?
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You can work around this very easily by changing your signature.
void Foo(TimeSpan? span = null) {
if (span == null) { span = TimeSpan.FromSeconds(2); }
...
}
I should elaborate - the reason those expressions in your example...
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
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Flow
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answered Jan 3 '12 at 10:15
Lukas EderLukas E...
Are there strongly-typed collections in Objective-C?
...Test
-(void)genericMethod:(id)object {}
@end
Objective-C will behave like it did before with compiler warnings.
GenericsTest<NSString*>* test = [GenericsTest new];
[test genericMethod:@"string"];
[test genericMethod:@1]; // Warning: Incompatible pointer types sending 'NSNumber *' to para...
Passing an array to a query using a WHERE clause
...o have a SQL query that uses the values of the array in its WHERE clause like:
18 Answers
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How to run Unix shell script from Java code?
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You should really look at Process Builder. It is really built for this kind of thing.
ProcessBuilder pb = new ProcessBuilder("myshellScript.sh", "myArg1", "myArg2");
Map<String, String> env = pb.environment();
env.put("VAR1", "myValue")...
What does character set and collation mean exactly?
...is a set of
rules for comparing characters in a
character set. Let's make the
distinction clear with an example of
an imaginary character set.
Suppose that we have an alphabet with
four letters: 'A', 'B', 'a', 'b'. We
give each letter a number: 'A' = 0,
'B' = 1, 'a' = 2, 'b' = 3. ...
Setting Curl's Timeout in PHP
...p. The dataset is very large, and as a result, the database consistently takes a long amount of time to return an XML response. To fix that, we set up a curl request, with what is supposed to be a long timeout.
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How can I check if an element exists in the visible DOM?
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It seems some people are landing here, and simply want to know if an element exists (a little bit different to the original question).
That's as simple as using any of the browser's selecting method, and checking it for a truthy value (generally).
For example, if my element had an...
Compiling simple Hello World program on OS X via command line
...ed Nov 1 '10 at 21:42
Martin YorkMartin York
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What is the preferred/idiomatic way to insert into a map?
...ons are not functionally equivalent :
The operator[] will search for the key, insert a default constructed value if not found, and return a reference to which you assign a value. Obviously, this can be inefficient if the mapped_type can benefit from being directly initialized instead of default co...