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List comprehension vs map
...ing map() over list comprehension or vice versa? Is either of them generally more efficient or considered generally more pythonic than the other?
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Hidden Features of MySQL
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Since you put up a bounty, I'll share my hard won secrets...
In general, all the SQLs I tuned today required using sub-queries. Having come from Oracle database world, things I took for granted weren’t working the same with MySQL. And my reading on MySQL tuning makes me conclude that MySQL is be...
convert String to DateTime
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DateTime.strptime allows you to specify the format and convert a String to a DateTime.
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A variable modified inside a while loop is not remembered
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@AvinashYadav The problem isn't really related to while loop or for loop; rather the use of subshell i.e., in cmd1 | cmd2, cmd2 is in a subshell. So if a for loop is executed in a subshell, the unexpected/problematic behaviour will be exhibited.
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Why does PHP 5.2+ disallow abstract static class methods?
...2, I saw a load of strict standards warnings from a project that was originally written without strict warnings:
8 Answers
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How to send JSON instead of a query string with $.ajax?
... JSON.stringify(data),
contentType: "application/json",
complete: callback
});
Note that the JSON object is natively available in browsers that support JavaScript 1.7 / ECMAScript 5 or later. If you need legacy support you can use json2.
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What optimizations can GHC be expected to perform reliably?
...has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances.
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Write lines of text to a file in R
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Mark - what If I have several threads all of which I would like to add lines to the same file? (The issue being is that you can't have more then one connection to a file, If I am not mistaken) Thanks.
– Tal Galili
Mar 18 '1...
How can I pass data from Flask to JavaScript in a template?
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Mark Amery
98.9k4848 gold badges336336 silver badges379379 bronze badges
answered Jun 30 '17 at 7:17
mcotemcote
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Convert a binary NodeJS Buffer to JavaScript ArrayBuffer
...else {
return createUnsafeBuffer(size);
}
}
????/lib/buffer.js#L98-L100 Node.js 9.4.0
function createUnsafeBuffer(size) {
return new FastBuffer(createUnsafeArrayBuffer(size));
}
What do you mean by a “memory pool?”
A memory pool is a fixed-size pre-allocated memory block for keepi...