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In Bash, how can I check if a string begins with some value?
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This snippet on the Advanced Bash Scripting Guide says:
# The == comparison operator behaves differently within a double-brackets
# test than within single brackets.
[[ $a == z* ]] # True if $a starts with a "z" (wildcard matching).
[[ $a == "z*" ]] # True if $a is equal to z* (literal ...
Error installing mysql2: Failed to build gem native extension
...helps!
Using MySQL with Rails 3 on Windows
Install railsinstaller -> www.railsinstaller.org (I installed it to c:\Rails)
Install MySQL (I used MySQL 5.5) -> dev.mysql.com/downloads/installer/
--- for mySQL installation ---
If you dont already have these two files installed you might...
Finding duplicate rows in SQL Server
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– Arif Ulusoy
Mar 9 '17 at 16:01
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Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
... edited May 23 '17 at 12:09
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111 silver badge
answered Jun 1 '10 at 20:21
Esko LuontolaEsko Lu...
MongoDb query condition on comparing 2 fields
... i tried db.T.find({$where: function() {return this.startDate == ISODate("2017-01-20T10:55:08.000Z");}}); it returns nothing, even one of the doc in the collection is ISODate("2017-01-20T10:55:08.000Z"). But <= and >= seem work. any idea?
– cateyes
Feb 22...
Git Blame Commit Statistics
...e" blame (or some better suited function, and/or in conjunction with shell commands) to give me a statistic of how much lines (of code) are currently in the repository originating from each committer?
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Postgresql aggregate array
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Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as marks
FROM student s
LEFT JOIN Grade g ON g.Student_id = s.Id
GROUP BY s.Id
By the way, if you are using Postgres 9.1, you don't need to repeat the...
Comment shortcut Android Studio
...n /** */
– Jacob R
Nov 26 '15 at 15:01
@PeterSmith Yes, but it still disrupts it. Try it for yourself; select some blo...
Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
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78
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In which scenario do I use a particular STL container?
... Starting point must be vector rather then empty. stackoverflow.com/questions/10699265/…
– eonil
Feb 18 '14 at 19:34
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