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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr
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`require': no such file to load -- mkmf (LoadError)
Failed to build gem native extension (mkmf (LoadError)) - Ubuntu 12.04
Usually, the solution is:
sudo apt-get install ruby-dev
Or, if that doesn't work, depending on your ruby version, run something li...
Add new value to an existing array in JavaScript [duplicate]
In PHP, I'd do something like:
8 Answers
8
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How do I squash two non-consecutive commits?
...fore B and squash D into A.
Git will open an editor, and you see a file like this, ex: git rebase --interactive HEAD~4
pick aaaaaaa Commit A
pick bbbbbbb Commit B
pick ccccccc Commit C
pick ddddddd Commit D
# Rebase aaaaaaa..ddddddd onto 1234567 (4 command(s))
#
# Commands:
# p, pick = use commit...
Convert Pixels to Points
...aps. Microsoft has a guide called "Developing DPI-Aware Applications", look for the section "Creating DPI-Aware Fonts".
The W3C has defined the pixel measurement px as exactly 1/96th of 1in regardless of the actual resolution of your display, so the above formula should be good for all web work.
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Is there a way to quickly find files in Visual Studio 2010?
Does Visual Studio 2010 have a built-in way to quickly find/open files, similar to the Ctrl + Shift + O function in Eclipse?
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Can git be integrated with Xcode?
...dited Jan 12 '15 at 18:48
Hans Ekbrand
38733 silver badges1212 bronze badges
answered Jun 17 '10 at 19:47
TodK...
make div's height expand with its content
...lex;
flex-direction: column;
min-height: 100vh;
}
header {
background-color: #3F51B5;
color: #fff;
}
section.content {
flex: 1;
}
footer {
background-color: #FFC107;
color: #333;
}
<div class="flex-container">
<header>
<h1>
Header ...
Where to get “UTF-8” string literal in Java?
...StandardCharsets;
...
StandardCharsets.UTF_8.name();
For Android: minSdk 19
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Check if a div exists with jquery [duplicate]
Yes, I know this has been asked a lot.
But, it confuses me, since the results on google for this search show different methods (listed below)
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How to get the selected radio button’s value?
I’m having some strange problem with my JS program. I had this working properly but for some reason it’s no longer working. I just want to find the value of the radio button (which one is selected) and return it to a variable. For some reason it keeps returning undefined .
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