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advantage of tap method in ruby
...= User.new
user.username = "foobar"
user.save!
they would have to follow all the three lines and then recognize that it is just creating an instance named user.
If it were:
user = User.new.tap do |u|
u.username = "foobar"
u.save!
end
then that would be immediately clear. A reader would not...
Can I concatenate multiple MySQL rows into one field?
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My need was to get ALL the data from one column. Don't use the GROUP BY clause to do this. Example : SELECT GROUP_CONCAT(emails SEPARATOR ', ') FROM users;
– Jonathan Bergeron
Jan 17 '14 at 14:04
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How to get Resource Name from Resource id
... wouldn't recommend use it if you use Proguard (minifyEnabled true), especially for getResources().getIdentifier(...
– user25
Jul 14 '18 at 22:54
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How connect Postgres to localhost server using pgAdmin on Ubuntu?
I installed Postgres with this command
6 Answers
6
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Mercurial — revert back to old version and continue from there
I'm using Mercurial locally for a project (it's the only repo there's no pushing/pulling to/from anywhere else).
7 Answers
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A list of indices in MongoDB?
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If you want to list all indexes:
db.getCollectionNames().forEach(function(collection) {
indexes = db.getCollection(collection).getIndexes();
print("Indexes for " + collection + ":");
printjson(indexes);
});
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Margin while printing html page
... inside the printable area.
You should also be aware that IE7++ automatically adjusts the size to best fit, and causes everything to be wrong even if you use cm or mm. To override this behaviour, the user must select 'Print preview' and then set the print size to 100% (default is Shrink To Fit).
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Creation timestamp and last update timestamp with Hibernate and MySQL
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thanks bro such a small thing need to update timestamp. I didnt know. you saved my day.
– Virendra Sagar
Jan 27 '17 at 14:28
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Custom CSS Scrollbar for Firefox
...ording to the spec. Both thin and a specific length may not do anything on all platforms, and what exactly it does is platform-specific. In particular, Firefox doesn't appear to be currently support a specific length value (this comment on their bug tracker seems to confirm this). The thin keywork d...
How to set standard encoding in Visual Studio
...erwise-default codepage.
Also, which files are not being saved as UTF-8? All of my .cs, .csproj, .sln, .config, .as*x, etc, all save as UTF-8 (with signature, the byte order marks), by default.
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