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What is copy-on-write?
...tenance of instant snapshot on database servers like Microsoft SQL Server 2005. Instant snapshots preserve a static view of a database by storing a pre-modification copy of data when underlaying data are updated. Instant snapshots are used for testing uses or moment-dependent reports and should not ...
ViewModel Best Practices
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edited Oct 4 '13 at 20:07
DOK
30.8k77 gold badges5757 silver badges9090 bronze badges
answered Mar ...
Is returning null bad design? [closed]
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206
The rationale behind not returning null is that you do not have to check for it and hence your ...
How does a PreparedStatement avoid or prevent SQL injection?
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10 Answers
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Active
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What is the difference between a directory and a folder?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Feb 22 '11 at 13:33
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Split column at delimiter in data frame [duplicate]
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105
@Taesung Shin is right, but then just some more magic to make it into a data.frame.
I added a "...
Changing the selected option of an HTML Select element
...n').onclick = function() {
var opts = sel.options;
for (var opt, j = 0; opt = opts[j]; j++) {
if (opt.value == val) {
sel.selectedIndex = j;
break;
}
}
}
<select id="sel">
<option>Cat</option>
<option>Dog</option>
<op...
Rollback to an old Git commit in a public repo
... [revision] .
where [revision] is the commit hash (for example: 12345678901234567890123456789012345678ab).
Don't forget the . at the end, very important. This will apply changes to the whole tree. You should execute this command in the git project root. If you are in any sub directory, then this...
“CAUTION: provisional headers are shown” in Chrome debugger
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Ravi
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answered Jan 17 '14 at 6:14
Willington VegaWillington Vega
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What are the differences between the urllib, urllib2, urllib3 and requests module?
...rs♦
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answered Feb 11 '13 at 0:32
HutchHutch
8,79811 gold badge...