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Which, if any, C++ compilers do tail-recursion optimization?
...);
int foo(int n, int acc) {
return (n == 0) ? acc : bar(n - 1, acc + 2);
}
int bar(int n, int acc) {
return (n == 0) ? acc : foo(n - 1, acc + 1);
}
Letting the compiler do the optimisation is straightforward: Just switch on optimisation for speed:
For MSVC, use /O2 or /Ox.
For GCC, Cl...
How do I convert a float number to a whole number in JavaScript?
...t; 0 // -5 -5 -5
value >>> 0 // 4294967291 4294967291 4294967291
value - value % 1 // -5 -5 -5
Positive - Larger numbers
// x = Number.MAX_SAFE_INTEGER/10 // =900719925474099.1
// value=x x=900719925474099 x=90071992...
Why switch is faster than if
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DanielDaniel
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launch sms application with an intent
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20 Answers
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Copy files from one directory into an existing directory
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What you want is:
cp -R t1/. t2/
The dot at the end tells it to copy the contents of the current directory, not the directory itself. This method also includes hidden files and folders.
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Git for Windows: .bashrc or equivalent configuration files for Git Bash shell
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What does it mean by select 1 from table?
... dwell)).
SELECT * FROM TABLE1 T1 WHERE EXISTS (
SELECT 1 FROM TABLE2 T2 WHERE T1.ID= T2.ID
);
Basically, the above will return everything from table 1 which has a corresponding ID from table 2. (This is a contrived example, obviously, but I believe it conveys the idea. Personally, I would...
AngularJS ng-repeat handle empty list case
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edited May 23 '17 at 12:10
Community♦
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answered Sep 9 '12 at 17:19
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Why doesn't JavaScript support multithreading?
...n actions in the following manner:
Process A, Thread 1
Process A, Thread 2
Process B, Thread 1
Process A, Thread 3
Process A, Thread 4
Process B, Thread 2
Pause Process A
Process B, Thread 3
Process B, Thread 4
Process B, Thread 5
Start Process A
Process A, Thread 5
This allows some form of sche...
How can I enable zoom in on UIWebView which inside the UIScrollView?
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answered May 29 '10 at 20:46
john geshrickjohn geshrick
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