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Swift: Testing optionals for nil
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edited Jan 13 '19 at 22:36
paulmelnikow
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Getting the first index of an object
...ted.
– Ryan Florence
May 27 '09 at 23:02
1
If you know that the object has only one element, then...
MongoDB Many-to-Many Association
...t's _id in the roles array instead of the name:
{name:"Joe"
,roles:["4b5783300334000000000aa9","5783300334000000000aa943","6c6793300334001000000006"]
}
and set up the roles like:
{_id:"6c6793300334001000000006"
,rolename:"Engineer"
}
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Disabling of EditText in Android
...s mentioned in the comments below, editable is deprecated (since API level 3). You should instead be using inputType (with the value none).
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Switching from zsh to bash on OSX, and back again?
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397
You can just use exec to replace your current shell with a new shell:
Switch to bash:
exec b...
How to set downloading file name in ASP.NET Web API
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293
You need to set the Content-Disposition header on the HttpResponseMessage:
HttpResponseMessage ...
ERROR: permission denied for sequence cities_id_seq using Postgres
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384
Since PostgreSQL 8.2 you have to use:
GRANT USAGE, SELECT ON SEQUENCE cities_id_seq TO www;
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How to move a file?
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Nicolas Gervais
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answered Jan 13 '12 at 22:19
ig0774ig0774
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How do I search within an array of hashes by hash values in ruby?
...lect (also called find_all):
@fathers.select {|father| father["age"] > 35 }
# => [ { "age" => 40, "father" => "Bob" },
# { "age" => 50, "father" => "Batman" } ]
Per the documentation, it "returns an array containing all elements of [the enumerable, in this case @fathers] fo...