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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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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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Getting the first index of an object
...ted.
– Ryan Florence
May 27 '09 at 23:02
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If you know that the object has only one element, then...
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 to copy from CSV file to PostgreSQL table with headers in CSV file?
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135
This worked. The first row had column names in it.
COPY wheat FROM 'wheat_crop_data.csv' DELIM...
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...
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 ...