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ruby system command check exit code

...tevm --invalid-option") $? #=> #<Process::Status: pid 9926 exit 2> $?.exitstatus #=> 2 share | improve this answer | follow | ...
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inserting characters at the start and end of a string

...you can also create a string with n Ls by using multiplication: m = 1 n = 2 yourstring = ("L" * m) + yourstring + ("L" * n) share | improve this answer | follow ...
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Does a const reference class member prolong the life of a temporary?

... The lifetime extension is not transitive through a function argument. §12.2/5 [class.temporary]: The second context is when a reference is bound to a temporary. The temporary to which the reference is bound or the temporary that is the complete object to a subobject of which the temporary is ...
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How do I script a “yes” response for installing programs?

... 213 The 'yes' command will echo 'y' (or whatever you ask it to) indefinitely. Use it as: yes | c...
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How to kill zombie process

... 253 A zombie is already dead, so you cannot kill it. To clean up a zombie, it must be waited on b...
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Why can't non-default arguments follow default arguments?

...ned to x or ? func1(1) # Is 1 assigned to a or ? func1(1, 2) # ? How you will suggest the assignment of variables in the function call, how default arguments are going to be used along with keyword arguments. >>> def fun1(x, y, a="who is you", b="True"): .....
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Code for decoding/encoding a modified base64 URL

... | edited Aug 4 '09 at 21:36 answered Aug 4 '09 at 17:06 ...
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How do I convert a string to a lower case representation?

... 2 Answers 2 Active ...
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Determine if an HTML element's content overflows

... 220 Normally, you can compare the client[Height|Width] with scroll[Height|Width] in order to detec...
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Tools for analyzing performance of a Haskell program

...earn Haskell (so currently I'm a completly beginner) I came over Problem 12 . I wrote this (naive) solution: 4 Answers ...