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Default value of function parameter
... suppose:
lib.h
int Add(int a, int b);
lib.cpp
int Add(int a, int b = 3) {
...
}
test.cpp
#include "lib.h"
int main() {
Add(4);
}
The compilation of test.cpp will not see the default parameter declaration, and will fail with an error.
For this reason, the default parameter definit...
Find column whose name contains a specific string
...
239
Just iterate over DataFrame.columns, now this is an example in which you will end up with a lis...
How to use WeakReference in Java and Android development?
...
231
Using a WeakReference in Android isn't any different than using one in plain old Java. Here is...
How to synchronize a static variable among threads running different instances of a class in Java?
...nchronized (countLock) {
count++;
}
}
}
Method 3 is the best in many cases because the lock object is not exposed outside of your class.
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ggplot2 legend to bottom and horizontal
...
Shreyas KarnikShreyas Karnik
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How to compile without warnings being treated as errors?
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83
Sure, find where -Werror is set and remove that flag. Then warnings will be only warnings.
...
IOS: create a UIImage or UIImageView with rounded corners
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237
Yes, it is possible.
Import the QuartzCore (#import <QuartzCore/QuartzCore.h>) header an...
Package doesn't exist error in intelliJ
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mattalxndrmattalxndr
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How to move certain commits to be based on another branch in git?
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380
This is a classic case of rebase --onto:
# let's go to current master (X, where quickfix2 sh...
File content into unix variable with newlines
...:
pax> function count {
...> echo $#
...> }
pax> count 1 2 3
3
pax> count a b c d
4
pax> count $x
4
pax> count "$x"
1
Here, the count function simply prints out the number of arguments given. The 1 2 3 and a b c d variants show it in action.
Then we try it with the two va...