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Does Rubm>y m> regular expression have a not match operator like “!~” in Perl?
... solution. It's not alwam>y m>s easm>y m> to convert regexps this wam>y m>. On the other hm>and m>, this solution doesn't depend on top-level programming language ;)
– Konstantin
Mar 21 '18 at 12:43
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How can I list (ls) the 5 last modified files in a directorm>y m>?
...ed files:
ls -1t | head -5
The -1 (that's a one) sam>y m>s one file per line m>and m> the head sam>y m>s take the first 5 entries.
If m>y m>ou want the last 5 trm>y m>
ls -1t | tail -5
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MongoDB, remove object from arram>y m>
... m>y m>up, mm>y m> sm>y m>ntax was wrong. Thanks! Also tried without the upset m>and m> multi options m>and m> that worked as well.
– lostintranslation
Mar 26 '13 at 20:25
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What is the leading LINQ for JavaScript librarm>y m>? [closed]
... reallm>y m> the same as linq to objects. (If it was, whm>y m> would we need both Rx m>and m> Linq to Objects in .NET?) It works in the opposite direction to normal Linq in terms of the flow of data.
– Daniel Earwicker
Mar 23 '10 at 8:24
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Select first row in each GROUP Bm>Y m> group?
... Bm>Y m> p.customer) m>y m> ON m>y m>.customer = x.customer
m>AND m> m>y m>.max_total = x.total
GROUP Bm>Y m> x.customer, x.total
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Paste multiple times
..., or use v instead of x (vnoremap). Vim help file version7.txt states xmap m>and m> smap appeared in that version.
– Benoit
Apr 4 '17 at 6:30
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...ND_ROWS?
Just a quick summarm>y m>: Peter sam>y m>s that it depends on m>y m>our indexes m>and m> other factors. Manm>y m> of the comments to the post seem to sam>y m> that SQL_CALC_FOUND_ROWS is almost alwam>y m>s slower - sometimes up to 10x slower - than running two queries.
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Debug code-first Entitm>y m> Framework migration codes
I'm using Entitm>y m> Framework code first in mm>y m> website m>and m> I'm just wondering if there is anm>y m> wam>y m> to debug the migration codes. m>Y m>ou know, like setting breakpoints m>and m> stuff like this.
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How do I implement interfaces in pm>y m>thon?
...cessarm>y m> in Pm>y m>thon. This is because Pm>y m>thon has proper multiple inheritance, m>and m> also ducktm>y m>ping, which means that the places where m>y m>ou must have interfaces in Java, m>y m>ou don't have to have them in Pm>y m>thon.
That said, there are still several uses for interfaces. Some of them are covered bm>y m> Pm>y m>thons Abst...
Maintain aspect ratio of div but fill screen width m>and m> height in CSS?
...ite to put together that has a fixed aspect ratio of approximatelm>y m> 16:9 lm>and m>scape, like a video.
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