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How to play a local video with Swift?
...e, thanks!
– Mike Lee
Feb 23 '18 at 10:57
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Get month name from Date
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it is a bit frustrating that even having new Date() returning Tue Sep 06 2011 20:02:25 GMT+0200 (CEST) which clearly means the Date object already has all this internally defined (month and week day names) it is not public, so we hav...
Do you (really) write exception safe code? [closed]
...vert back to C and avoid C++ libraries, as well as external surprises like Windows SEH).
Writing exception safe code
To write exception safe code, you must know first what level of exception safety each instruction you write is.
For example, a new can throw an exception, but assigning a built-in (e....
How to get datetime in JavaScript?
...code should return 02:45 PM instead of 14:45 PM. So I modified your code a bit: function getNowDateTimeStr(){ var now = new Date(); var hour = now.getHours() - (now.getHours() >= 12 ? 12 : 0); return [[AddZero(now.getDate()), AddZero(now.getMonth() + 1), now.getFullYear()].join("/"), [AddZero(h...
Tab key == 4 spaces and auto-indent after curly braces in Vim
...ndent
set tabstop=4
set shiftwidth=4
set expandtab
The help files take a bit of time to get used to, but the more you read, the better Vim gets:
:help smartindent
Even better, you can embed these settings in your source for portability:
:help auto-setting
To see your current settings:
:set ...
What is the meaning of the term arena in relation to memory?
...allocator, and if you use this knowledge your custom allocator will always win. Allocators are not magic. An arena is useful if you have a lot of items that all die at the same, well-defined point in time. That's pretty much all you need to know. It's not rocket-science.
– Andr...
Generating a SHA-256 hash from the Linux command line
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acdcjunior
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answered Jul 28 '10 at 23:43
mvdsmvds
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Replace tabs with spaces in vim
...e seeing your comment.
– Tai Le
May 10 '18 at 9:43
You can even do :args retab | w to do to all files opened on the co...
Apply pandas function to column to create multiple new columns?
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textcol feature1 feature2
0 0.772692 1.772692 -0.227308
1 0.857210 1.857210 -0.142790
2 0.065639 1.065639 -0.934361
3 0.819160 1.819160 -0.180840
4 0.088212 1.088212 -0.911788
EDIT:
Please be aware of the huge memory consumption and low speed: https://ys-l.github.io/posts/2015/08...
Why is early return slower than else?
...is a power of 2, so 2**i is the size of the hash table, i is the number of bits used from the hash value j.
Each probe into the table can find one of these:
The slot is empty, in that case the probing stops and we know the
value is not in the table.
The slot is unused but was used in the past in ...