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How should strace be used?
A colleague once told me that the last option when everything has failed to debug on Linux was to use strace .
12 Answers
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How to assign name for a screen? [closed]
I'm using the screen multiplexer tool on the command shell and open a lot of screens. I then forget which process ID associates with which task.
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Is it possible to create a “weak reference” in javascript?
Is there any way in javascript to create a "weak reference" to another object? Here is the wiki page describing what a weak reference is. Here is another article that describes them in Java. Can anyone think of a way to implement this behavior in javascript?
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'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
What explains the difference in behavior of boolean and bitwise operations on lists vs NumPy arrays?
8 Answers
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Using a strategy pattern and a command pattern
Both design patterns encapsulate an algorithm and decouple implementation details from their calling classes. The only difference I can discern is that the Strategy pattern takes in parameters for execution, while the Command pattern doesn't.
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How to cherry-pick multiple commits
I have two branches. Commit a is the head of one, while the other has b , c , d , e and f on top of a . I want to move c , d , e and f to first branch without commit b . Using cherry pick it is easy: checkout first branch cherry-pick one by one c to f and rebase second branch on...
Replace a character at a specific index in a string?
I'm trying to replace a character at a specific index in a string.
8 Answers
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Is there a way to make R beep/play a sound at the end of a script?
When I run R scripts I go do something else on a different desktop. If I don't check frequently, I never know when something is finished. Is there a way to invoke a beep (like a system beep) or get R to play a sound or notify growl via some code at the end of my script?
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What does f+++++++++ mean in rsync logs?
I'm using rsync to make a backup of my server files, and I have two questions:
4 Answers
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Does Python have a ternary conditional operator?
If Python does not have a ternary conditional operator, is it possible to simulate one using other language constructs?
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