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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr
... Just installing zlib1g-dev will give you what you need here, or at least it did for me.
– lindes
Jul 3 '19 at 20:46
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List of Big-O for PHP functions
...tand that practically speaking PHP hashtables give O(1) performance, or at least O(1) on average - that's what hashtables are for. I was just curious as to why you said they are "really O(n)" and not "really O(logn)". Great post by the way!
– Cam
Jun 11 '11 at...
Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
... add a typecast
byte b = (byte)(127 + 1);
and then it compiles.
(*) at least not of the kind String-to-integer, float-to-Time, ... Java does support coercions if they are, in a sense, non-loss (Java calls this "widening").
And no, the word "coercion" did not need correcting. It was chosen ver...
Detect when a window is resized using JavaScript ?
...re. I don't have Opera to test, it may still be different, but they're at least more consistent than quirksmode suggests, I'll send them a note this needs updating.
– Nick Craver♦
Jun 8 '10 at 10:31
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setting y-axis limit in matplotlib
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This worked at least in matplotlib version 2.2.2:
plt.axis([None, None, 0, 100])
Probably this is a nice way to set up for example xmin and ymax only, etc.
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Xcode 4 hangs at “Attaching to (app name)”
... project in xcode and all that will get
recreated and it should work. At least
it did for me.
Another tip is to manually delete the build directory.
Yet another tip is to navigate to the Organizer (Shift ⇧ Command ⌘ 2 in xcode 4), select Projects, select you application in the left hand s...
How to delete files older than X hours
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there is no -older switch (at least in my find command), and that's what would be needed. -newer doesn't help.
– iconoclast
Feb 17 '11 at 6:53
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How can I change or remove HTML5 form validation default error messages?
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This has the following problem (at least in Chrome 55) : when the invalid message pops , if the user keeps focus in the invalid field (without clicking) and edits the field the message keeps poping out - even when the field is valid - it's necessary to either...
.c vs .cc vs. .cpp vs .hpp vs .h vs .cxx [duplicate]
...s) on UNIX-like systems, where .cpp is more common on Windows systems. At least in my observations.
– Daniel Gallagher
Mar 2 '11 at 18:18
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Showing line numbers in IPython/Jupyter Notebooks
...n/Jupyter Notebooks indicate the line on which the error occurred; but (at least by default) no line numbers are indicated in Notebooks.
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