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How do you loop in a Windows batch file?
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Andreas Rejbrand
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answered Aug 31 '09 at 4:35
rahulrahul
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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); }
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}
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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Freeing up a TCP/IP port?
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As the others have said, you'll have to kill all processes that are listening on that port. The easiest way to do that would be to use the fuser(1) command. For example, to see all of the processes listening for http requests on port 80 (run as root or use sudo):...
Objective-C formatting string for boolean?
...it isn't hard):
NSLog(@" %s", BOOL_VAL ? "true" : "false");
I don't think there is a format specifier for boolean values.
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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...
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. ...