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How to extract the first two characters of a string in shell scripting?

...er expansion: pax> long="USCAGol.blah.blah.blah" pax> short="${long:0:2}" ; echo "${short}" US This will set short to be the first two characters of long. If long is shorter than two characters, short will be identical to it. This in-shell method is usually better if you're going to be doi...
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correct way to use super (argument passing)

... 107 Sometimes two classes may have some parameter names in common. In that case, you can't pop the ...
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How to Create a circular progressbar in Android which rotates on it?

...le file (@drawable folder): circular_progress_bar.xml <?xml version="1.0" encoding="utf-8"?> <rotate xmlns:android="http://schemas.android.com/apk/res/android" android:fromDegrees="270" android:toDegrees="270"> <shape android:innerRadiusRatio="2.5" android...
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Is there an XSLT name-of element?

... | edited Feb 25 '09 at 9:22 Robert Gould 64.3k5757 gold badges174174 silver badges267267 bronze badges ...
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What is offsetHeight, clientHeight, scrollHeight?

... | edited Apr 26 '16 at 20:25 answered Mar 26 '14 at 23:55 ...
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Is it safe to ignore the possibility of SHA collisions in practice?

...han 2n/2). For instance, with SHA-256 (n=256) and one billion messages (p=109) then the probability is about 4.3*10-60. A mass-murderer space rock happens about once every 30 million years on average. This leads to a probability of such an event occurring in the next second to about 10-15. That's 4...
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Update parent scope variable in AngularJS

...= "this WILL modify the parent"; }); Working demo: http://jsfiddle.net/sh0ber/xxNxj/ See What are the nuances of scope prototypal / prototypical inheritance in AngularJS? share | improve this ans...
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Why is an int in OCaml only 31 bits?

...pointer dererefences plus one object construction. And you take up almost 20 Byte. However, the trick is that with so-called immutable value types like integers, you usually don't need all the metadata in the object header: you can just leave all that stuff out, and simply synthesize it (which is V...
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Why is LINQ JOIN so much faster than linking with WHERE?

I've recently upgraded to VS 2010 and am playing around with LINQ to Dataset. I have a strong typed dataset for Authorization that is in HttpCache of an ASP.NET WebApplication. ...
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How to install grunt and how to build script with it

...| edited Mar 17 '14 at 15:05 Tomalak 294k6060 gold badges474474 silver badges577577 bronze badges answer...