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Changing one character in a string
...str to s
edit2: As Two-Bit Alchemist mentioned in the comments, this code does not work with unicode.
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Python os.path.join on Windows
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Thanks! This is even more useful since it doesn't suffer from the gotcha that @Jobu mentioned earlier: os.path.join(os.sep, "C:\\a" + os.sep, "b") returns "C:\\a\\b" on Windows.
– pianoJames
Jul 24 '18 at 17:42
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如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
... regression, so you need less training data. And even if the NB assumption doesn’t hold, a NB classifier still often does a great job in practice. A good bet if want something fast and easy that performs pretty well. Its main disadvantage is that it can’t learn interactions between featu...
MySQL select 10 random rows from 600K rows fast
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Your technique still does a table scan. Use FLUSH STATUS; SELECT ...; SHOW SESSION STATUS LIKE 'Handler%'; to see it.
– Rick James
Jul 5 '15 at 16:17
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Replace a string in a file with nodejs
...nsion in paths? something like paths: ['path/to/your/file/*.js'] --> it doesn't work
– Kalamarico
Jun 24 '15 at 7:44
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Dynamically select data frame columns using $ and a character value
...xtract only a single column as a vector).
For example,
var <- "mpg"
#Doesn't work
mtcars$var
#These both work, but note that what they return is different
# the first is a vector, the second is a data.frame
mtcars[[var]]
mtcars[var]
You can perform the ordering without loops, using do.call t...
Can you determine if Chrome is in incognito mode via a script?
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That's pretty cool, i didn't realise that incognito mode doesn't highlight visited links. This requires user to click a link though.
– Igor Zevaka
May 26 '10 at 0:29
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How can I get the corresponding table header (th) from a table cell (td)?
...nction($) {
"use strict";
// Only part of the demo, the thFromTd call does the work
$(document).on('mouseover mouseout', 'td', function(event) {
var td = $(event.target).closest('td'),
th = thFromTd(td);
th.parent().find('.highlight').removeClass('highlight');
if (event.ty...
Fixed Table Cell Width
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The accepted answer does not work unless you explicitly apply a width for the desired table. Works perfectly whether you use a unit or a percentage. Figured I'd point this out since @totymedli's answer didn't get any votes and I didn't want user...
Should arrays be used in C++?
... definitely be used in preference to C style arrays in the
first case. It doesn't address the third, however, and having the
compiler dimension the array according to the number of initializers is
still a valid reason to prefer C style arrays.
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