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How to convert a byte array to a hex string in Java?

...& 0x0F]; } return new String(hexChars); } My own tiny benchmarks (a million bytes a thousand times, 256 bytes 10 million times) showed it to be much faster than any other alternative, about half the time on long arrays. Compared to the answer I took it from, switching to bitwise ops --...
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Python: Get the first character of the first string in a list?

...et up to the first character in the first item in the list would also work. You want to end after the first character (character zero), not start after the first character (character zero), which is what the code in your question means. ...
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How to make type=“number” to positive numbers only

... Álvaro González 124k3434 gold badges222222 silver badges314314 bronze badges answered Oct 7 '13 at 19:52 QuentinQuentin ...
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How do I create a self-signed certificate for code signing on Windows?

... a self-signed certificate for code signing using tools from the Windows SDK? 5 Answers ...
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mysql - how many columns is too many?

I'm setting up a table that might have upwards of 70 columns. I'm now thinking about splitting it up as some of the data in the columns won't be needed every time the table is accessed. Then again, if I do this I'm left with having to use joins. ...
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How to run Unix shell script from Java code?

... You should really look at Process Builder. It is really built for this kind of thing. ProcessBuilder pb = new ProcessBuilder("myshellScript.sh", "myArg1", "myArg2"); Map<String, String> env = pb.environment(); env.put("VAR1", "myValue")...
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How to set a default value with Html.TextBoxFor?

Simple question, if you use the Html Helper from ASP.NET MVC Framework 1 it is easy to set a default value on a textbox because there is an overload Html.TextBox(string name, object value) . When I tried using the Html.TextBoxFor method, my first guess was to try the following which did not work...
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Preloading images with JavaScript

... Yes. This should work on all major browsers. share | improve this answer | follow | ...
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Prevent strace from abbreviating arguments?

...edited Jan 29 at 17:05 rogerdpack 46.3k3030 gold badges200200 silver badges315315 bronze badges answered Jul 13 '11 at 0:39 ...
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How do I access the ModelState from within my View (aspx page)?

... Abel 51.6k1919 gold badges132132 silver badges214214 bronze badges answered Jun 26 '09 at 13:37 Mathias FMathi...