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How to generate a random string in Ruby
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(0...8).map { (65 + rand(26)).chr }.join
I spend too much time golfing.
(0...50).map { ('a'..'z').to_a[rand(26)] }.join
And a last one that's even more confusing, but more flexible and wastes fewer cycles:
o = [('a'..'z'), ('A'..'Z')].map(&:to_a).flatten
string = (0...50).ma...
Differences between Ant and Maven [closed]
...ion="target"/>
<target name="init">
<!-- Create the time stamp -->
<tstamp/>
<!-- Create the build directory structure used by compile -->
<mkdir dir="${build}"/>
</target>
<target name="compile" depends="init"
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Android ACTION_IMAGE_CAPTURE Intent
We are trying to use the native camera app to let the user take a new picture. It works just fine if we leave out the EXTRA_OUTPUT extra and returns the small Bitmap image. However, if we putExtra(EXTRA_OUTPUT,...) on the intent before starting it, everything works until you try to hit the "Ok" ...
C++ equivalent of Java's toString?
I'd like to control what is written to a stream, i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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Difference in make_shared and normal shared_ptr in C++
...ed. Using make_shared makes a difference because it could prolong the life-time of the memory allocated for the managed object. When the shared_ptr count hits 0, the destructor for the managed object gets called regardless of make_shared, but freeing its memory can only be done if make_shared was no...
Compute a confidence interval from sample data
I have sample data which I would like to compute a confidence interval for, assuming a normal distribution.
4 Answers
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How does JavaScript handle AJAX responses in the background?
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Below the covers, javascript has an event queue. Each time a javascript thread of execution finishes, it checks to see if there is another event in the queue to process. If there is, it pulls it off the queue and triggers that event (like a mouse click, for example).
The nativ...
Maximum call stack size exceeded error
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@Oliver If you have to run a function nearly 300 trillion times, you're probably doing something wrong.
– ceejayoz
Dec 30 '14 at 21:07
3
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Why should I not include cpp files and instead use a header?
...ompile, it takes hours to compile. But that only really matters the first time -- once you've compiled it once, there's no reason to compile it again.
Unless you change something.
Now, if you had two million lines of code merged together into one giant behemoth, and need to do a simple bug fix su...
How can I selectively merge or pick changes from another branch in Git?
I'm using Git on a new project that has two parallel -- but currently experimental -- development branches:
25 Answers
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