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What is the difference between range and xrange functions in Python 2.X?
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In Python 2.x:
range creates a list, so if you do range(1, 10000000) it creates a list in memory with 9999999 elements.
xrange is a sequence object that evaluates lazily.
In Python 3, range does the equivalent of python's xrange, and to get the list, you have to use list(rang...
How to replace plain URLs with links?
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+100
First off, rolling your own regexp to parse URLs is a terrible idea. You must imagine this is a common enough problem that someone h...
How to hide output of subprocess in Python 2.7
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edited Jun 30 '12 at 1:12
answered Jun 29 '12 at 22:15
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Why does string::compare return an int?
...like short or char ? My understanding is that this method only returns -1, 0 or 1.
9 Answers
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MFC CString::Format()函数详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，
但并不多用，所以这里只对第一个介绍）
参数：
1、Format参数是一个格式字符串，用于格式化Args里面的值的。格式字符串中包含了一个或多个以%字符开始的格式指令，我们通过这些格式指令来编译器如何对Args里面的值进...
How do I parse a string to a float or int?
...222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ?
28 Answers
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How to overcome TypeError: unhashable type: 'list'
...ue = [x.strip() for x in line]
key = line[0].strip()
value = line[1].strip()
# Now we check if the dictionary contains the key; if so, append the new value,
# and if not, make a new list that contains the current value
# (For future reference, this is a great place for a default...
Transposing a 2D-array in JavaScript
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210
array[0].map((_, colIndex) => array.map(row => row[colIndex]));
map calls a provided...
How do you remove a specific revision in the git history?
...ks more or less like this:
pick deadbee The oneline of this commit
pick fa1afe1 The oneline of the next commit
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The oneline descriptions are purely for your pleasure; git-rebase will not look at them but at the commit names ("deadbee" and "fa1afe1" in this example), so do not delete or edit the...