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Java: How to test methods that call System.exit()?
... @LeoHolanda You're right; looking at the implementation of the rule, I now see it uses a custom security manager which throws an exception when the call for the "system exit" check occurs, therefore ending the test. The added example test in my answer satisfies both requirements (proper verifica...
Ruby on Rails: How do I add placeholder text to a f.text_field?
....text_field :attr, placeholder: "placeholder text" %>
So rails 4+ can now use this syntax instead of the hash syntax
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How do I declare an array of weak references in Swift?
...lt;T>(&object) can change randomly (same with withUnsafePointer). I now use a version backed by a NSHashTable: gist.github.com/simonseyer/cf73e733355501405982042f760d2a7d.
– simonseyer
Feb 27 '18 at 15:42
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Showing data values on stacked bar chart in ggplot2
...ack(vjust = 0.5))
Also note that "position_stack() and position_fill() now stack values in the reverse order of the grouping, which makes the default stack order match the legend."
Answer valid for older versions of ggplot:
Here is one approach, which calculates the midpoints of the bars.
l...
Why do I get a warning every time I use malloc?
...stdlib.h>
If you don't include this header file, the function is not known to the compiler. So it sees it as undeclared.
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Method overloading in Objective-C?
As far as my knowledge, Objective-C does not support method overloading. What can be the alternative for this in Objective-C? Or should I always use different method name?
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What exactly is Python multiprocessing Module's .join() Method Doing?
...mon across many programming languages, so Python just adopted it as well.
Now, the reason you see the 20 second delay both with and without the call to join() is because by default, when the main process is ready to exit, it will implicitly call join() on all running multiprocessing.Process instanc...
How do I show a Save As dialog in WPF?
...nked to the wrong version. I've updated my answer to point the correct one now.
– Twelve47
Apr 11 '11 at 14:50
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Why do x86-64 systems have only a 48 bit virtual address space?
...al answer is that AMD was just being cheap and hoped nobody would care for now, but I don't have references to cite.
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Should I learn C before learning C++? [closed]
...at is true whether or not you started with C or started with C++.
If you know C first, then that is good plus to learning C++. You will start with knowing a chunk of the language. If you do not know C first then there is no point focusing on a different language. There are plenty of good books a...