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round() for float in C++
... but there are others such as round-to-even, which is less biased and generally better if you're going to do a lot of rounding; it's a bit more complex to implement though.
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Linux: copy and create destination dir if it does not exist
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oops, right. But then, test may be a bash builtin (especially if written as [[ -d "$d" ]]) and mkdir can not ;-)
– Michael Krelin - hacker
Oct 7 '09 at 17:00
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Rank function in MySQL
... (SELECT @curRank := 0) r
ORDER BY age;
The (SELECT @curRank := 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT I...
WPS在线表格使用指导 · App Inventor 2 中文网
...号、列号都从 1 开始；读出的单元格一律是文本（数字 98 读出来是 "98"，空单元格是空文本）。
写入时数字积木写成数值，文本积木写成文本（手机号用文本输入框的内容写入，不会变成科学计数法）。
准备：粘贴脚...
How do I change the color of the text in a UIPickerView under iOS 7?
...ered Jan 24 at 8:21
logeshpalani98logeshpalani98
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Python 3 ImportError: No module named 'ConfigParser'
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Mark Amery
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answered Dec 30 '12 at 2:12
Abe Karplus...
What does the restrict keyword mean in C++?
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A restrict-qualified pointer (or reference)...
! ...is basically a
promise to the compiler that for the
scope of the pointer, the target of the pointer will only
be accessed through that pointer (and pointers copied
from it).
In C++ compilers that support it i...
Worst security hole you've seen? [closed]
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Would have loved to see the face of the customer who actually got delivered the .1 harddrives he paid for.
– relet
Jul 16 '10 at 12:47
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JavaScript curry: what are the practical applications?
...self—is useful in JavaScript; it is a technique for converting function calls with multiple arguments into chains of function calls with a single argument for each call, but JavaScript supports multiple arguments in a single function call.
In JavaScript—and I assume most other actual languages...
URL query parameters to dict python
...t;> url = "http://www.example.org/default.html?ct=32&op=92&item=98"
>>> parse.urlsplit(url)
SplitResult(scheme='http', netloc='www.example.org', path='/default.html', query='ct=32&op=92&item=98', fragment='')
>>> parse.parse_qs(parse.urlsplit(url).query)
{'item':...