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What is the LD_PRELOAD trick?

...ibrary (including the C runtime, libc.so). So to run ls with your special malloc() implementation, do this: $ LD_PRELOAD=/path/to/my/malloc.so /bin/ls share | improve this answer | ...
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How do I use reflection to invoke a private method?

There are a group of private methods in my class, and I need to call one dynamically based on an input value. Both the invoking code and the target methods are in the same instance. The code looks like this: ...
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Installing PG gem on OS X - failure to build native extension

It seems many others have had problems installing the pg gem. None of the solutions posed for others have worked for me. 1...
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Pros and cons of using sbt vs maven in Scala project [closed]

...ect. Otherwise, just use SBT. You get access to the same dependencies (really the best part about maven, IMHO). You also get the incremental compilation, which is huge. The ability to start up a shell inside of your project, which is also great. ScalaMock only works with SBT, and you're proba...
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how do you filter pandas dataframes by multiple columns

...r function using query in pandas. Here you have filtering of df results by all the kwargs parameters. Dont' forgot to add some validators(kwargs filtering) to get filter function for your own df. def filter(df, **kwargs): query_list = [] for key in kwargs.keys(): query_list.append(f...
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How to read a file in reverse order?

... – BringBackCommodore64 Mar 13 '17 at 16:09  |  show 5 more co...
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How to sort an array by a date property

...e a custom non-enumerable sortBy function using a Schwartzian transform on all arrays : (function(){ if (typeof Object.defineProperty === 'function'){ try{Object.defineProperty(Array.prototype,'sortBy',{value:sb}); }catch(e){} } if (!Array.prototype.sortBy) Array.prototype.sortBy = sb; ...
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To ARC or not to ARC? What are the pros and cons? [closed]

...t has no GC runtime overhead. The compiler inserts retains and releases in all the places you should have anyway. But it's smarter than you and can optimize out the ones that aren't actually needed (just like it can unroll loops, eliminate temporary variables, inline functions, etc.) OK, now I will...
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How to get position of a certain element in strings vector, to use it as an index in ints vector?

...e use size_t we must be careful not to subtract a larger iterator from a smaller iterator. – dasblinkenlight Oct 17 '17 at 10:49 ...
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Map over object preserving keys

... | edited Dec 6 '16 at 17:16 answered Sep 26 '13 at 8:43 ...