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Get index of array element faster than O(n)
Given I have a HUGE array, and a value from it. I want to get index of the value in array. Is there any other way, rather then call Array#index to get it? The problem comes from the need of keeping really huge array and calling Array#index enormous amount of times.
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Comparing two dictionaries and checking how many (key, value) pairs are equal
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Maybe something like this:
shared_items = {k: x[k] for k in x if k in y and x[k] == y[k]}
print len(shared_items)
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Biggest GWT Pitfalls? [closed]
...plement using GWT. Has anyone encountered any major pitfalls in using GWT (and GWT-EXT) that were unable to be overcome? How about from a performance perspective?
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python location on mac osx
...if the previous owner of the laptop has installed macpython using macport. And I remembered that osx has an builtin version of python. I tried using type -a python and the result returned
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Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个重要支柱：UNIX 操作系统、MINIX 操作系统、GNU 计划、POSIX 标准和Internet 网络。
下面主要根据这五个基本线索来追寻一下Linux 的开发历程，它的酝酿过程，最初的发展经历。首先分别介绍其中的四个基本要素(UNIX、MINIX、G...
I keep getting “Uncaught SyntaxError: Unexpected token o”
... that's interesting.. I guess jquery takes a guess at datatype and assumes it's json. I would think that getJson would work then as well, right?
– ek_ny
Nov 10 '11 at 15:54
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Difference between ProcessBuilder and Runtime.exec()
I'm trying to execute an external command from java code, but there's a difference I've noticed between Runtime.getRuntime().exec(...) and new ProcessBuilder(...).start() .
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Best way to represent a fraction in Java?
...too long ago, for Project Euler problems. It keeps a BigInteger numerator and denominator, so it'll never overflow. But it'll be a tad slow for a lot of operations that you know will never overflow.. anyway, use it if you want it. I've been dying to show this off somehow. :)
Edit: Latest and gre...
Disable assertions in Python
... process that uses or inherits the environment.
E.g., in Windows, setting and then clearing the environment variable:
C:\>python -c "assert False"
Traceback (most recent call last):
File "<string>", line 1, in <module>
AssertionError
C:\>SET PYTHONOPTIMIZE=TRUE
C:\>python -...
Installing R on Mac - Warning messages: Setting LC_CTYPE failed, using “C”
...e runs R in a docker environment (under root), try to run R with below command,
LC_ALL=C.UTF-8 R
# instead of just `R`
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