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Concurrent.futures vs Multiprocessing in Python 3
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I wouldn't call concurrent.futures more "advanced" - it's a simpler interface that works very much the same regardless of whether you use multiple threads or multiple processes as the underlying parallelization gimmick.
So, like virtuall...
MySQL - UPDATE query based on SELECT Query
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You can actually do this one of two ways:
MySQL update join syntax:
UPDATE tableA a
INNER JOIN tableB b ON a.name_a = b.name_b
SET validation_check = if(start_dts > end_dts, 'VALID', '')
-- where clause can go here
ANSI SQL syntax...
std::string formatting like sprintf
...mixed cout and printfs are output correctly. Disabling this link (with a call to cout.sync_with_stdio(false)) causes c++'s streams to outperform stdio, at least as of MSVC10.
– Jimbo
Jan 20 '13 at 21:15
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How to create streams from string in Node.Js?
...g"])
readable.on("data", (chunk) => {
console.log(chunk) // will be called once with `"input string"`
})
Note that at least between 10.17 and 12.3, a string is itself a iterable, so Readable.from("input string") will work, but emit one event per character. Readable.from(["input string"]) wil...
node.js equivalent of python's if __name__ == '__main__' [duplicate]
...dule.
To take advantage of this, check if this module is the main module and, if so, call your main code:
var fnName = function() {
// main code
}
if (require.main === module) {
fnName();
}
EDIT: If you use this code in a browser, you will get a "Reference error" since "require" is not...
MFC CSplitterWnd的用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ateSpltr = m_wndSplitter.CreateStatic( this, 2, 1);
// COneView and CAnotherView are user-defined views derived from CMDIView
m_wndSplitter.CreateView(0,0,RUNTIME_CLASS(COneView), CSize(0,0),
pContext);
m_wndSplitter.CreateView(1,0,RUNTIME_CLASS(CAnotherVie...
What's the common practice for enums in Python? [duplicate]
... Python.
The best way I've found to emulate them is by overridding _ str _ and _ eq _ so you can compare them and when you use print() you get the string instead of the numerical value.
class enumSeason():
Spring = 0
Summer = 1
Fall = 2
Winter = 3
def __init__(self, Type):
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How to extract the n-th elements from a list of tuples?
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@Wayne Werner: Yep. This stuff was all just passive knowledge (I don't often use it) - but it's good to be reminded now and then so you know where / what to look for...
– Daren Thomas
Jul 22 '10 at 13:14
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How to get result of console.trace() as string in javascript with chrome or firefox?
...don't define names for functions and I also can not get their names with callee.caller.name .
6 Answers
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Impossible to Install PG gem on my mac with Mavericks
I'm trying to install the pg gem in order to work again with my rails projects. But I get this error:
26 Answers
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