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How do you round a float to two decimal places in jruby
JRuby 1.6.x. How do you round a float to decimal places in jruby.
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解决：error while loading shared libraries: libpcre.so.1: cannot open ...
解决：error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directoryerror while loading shared libraries: xxx so 1: cannot open shared object file: No such file or directory错误原因是 error while loading shared libraries: xxx.so.1: cannot open...
In Python, how do I convert all of the items in a list to floats?
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Algorithm to generate all possible permutations of a list?
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What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
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I create...
Calculate last day of month in JavaScript
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var month = 0; // January
var d = new Date(2008, month + 1, 0);
alert(d); // last day in January
IE 6: Thu Jan 31 00:00:00 CST 2008
IE 7: Thu Jan 31 00:00:00 CST 2008
IE 8: Beta 2: Thu Jan 31 00:00:00 CST 2008
Opera 8.54: ...
Associativity of “in” in Python?
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1 in [] in 'a' is evaluated as (1 in []) and ([] in 'a').
Since the first condition (1 in []...
Concept behind these four lines of tricky C code
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The number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
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Date.getDay() javascript returns wrong day
...y getDay is an integer corresponding to the day of the week: 0 for Sunday, 1 for Monday, 2 for Tuesday, and so on.
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Does C have a “foreach” loop construct?
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