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Format date and time in a Windows batch script
...ss"') do set datetime=%%a
move "%oldfile%" "backup-%datetime%"
Of course nowadays PowerShell is always installed, but on Windows XP you'll probably only want to use this technique if your batch script is being used in a known environment where you know PS is available (or check in your batch file ...
Delete empty lines using sed
...-) real 0m0.014s user 0m0.002s sys 0m0.006s Would you know of a nifty way to include this into an awk-script like, e.g., a pattern? awk '/mypattern/ {do stuff...}'
– Bernie Reiter
Feb 27 '17 at 22:17
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List all indexes on ElasticSearch server?
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@paweloque answer now looks like it's the correct solution; seems cleaner. curl http://localhost:9200/_stats/indexes\?pretty\=1
– notapatch
Mar 28 '14 at 12:09
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Pandas - How to flatten a hierarchical index in columns
...test version of pandas. It works with 0.18 but not with 0.20 (latest as of now)
– TH22
Oct 10 '17 at 20:59
1
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how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
...rows and with mysql i can do this with only ONE query without any looping. Now I wonder if this is possible with postgresql too: to use just one query to bulk update OR insert. You say: "you're best of splitting it into two queries, one for INSERT and one for UPDATE" but how can I do an insert which...
Suppress or Customize Intro Message in Fish Shell
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I think this worked once, but it doesn't anymore; now it seems you need to set the variable to an empty string.
– mjs
Jun 13 '17 at 7:34
add a comment...
How to use underscore.js as a template engine?
...verflow
. It says we can use underscore.js as a template engine. anybody know good tutorials about how to use underscore.js for templating, especially for biginners who have less experience with advanced javascript. Thanks
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Postgresql - change the size of a varchar column to lower length
...ne tries to update anything on that row it's going to reject it as too big now, at the point it goes to store the new version of the row. Hilarity ensues for the user.
VARCHAR is a terrible type that exists in PostgreSQL only to comply with its associated terrible part of the SQL standard. If you...
set the width of select2 input (through Angular-ui directive)
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This is the best answer so far. But now, for me, the search field doesn't fill all the width. Any easy way to correct this?
– TNT
Dec 23 '17 at 22:39
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Check OS version in Swift?
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Update:
Now you should use new availability checking introduced with Swift 2:
e.g. To check for iOS 9.0 or later at compile time use this:
if #available(iOS 9.0, *) {
// use UIStackView
} else {
// show sad face emoji
}
or...