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How to test if parameters exist in rails
I'm using an IF statement in Ruby on Rails to try and test if request parameters are set. Regardless of whether or not both parameters are set, the first part of the following if block gets triggered. How can I make this part ONLY get triggered if both params[:one] and params[:two] is set?
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what's the correct way to send a file from REST web service to client?
...at I don't know where I should even begin. My REST service is made on Java and I'm using Jersey, I'm sending all the data using the JSON format.
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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
... answered Jun 3 '11 at 8:57
Andrew GrimmAndrew Grimm
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PHP - Get bool to echo false when false
...ed Feb 9 '11 at 18:05
Dan GrossmanDan Grossman
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Format Float to n decimal places
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You may also pass the float value, and use:
String.format("%.2f", floatValue);
Documentation
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Modulo operator with negative values [duplicate]
...rom ISO14882:2011(e) 5.6-4:
The binary / operator yields the quotient, and the binary % operator
yields the remainder from the division of the first expression by the
second. If the second operand of / or % is zero the behavior is
undefined. For integral operands the / operator yields the ...
push multiple elements to array
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This answer and the selected answer produce different, and perhaps unexpected, results. a.push(1) vs. a.push([1])
– oevna
Dec 24 '16 at 1:12
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Warning the user/local/mysql/data directory is not owned by the mysql user
I can't start the mysql service in Snow Leopard, and in the panel prefs appears the message,
2 Answers
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Ways to iterate over a list in Java
...ones) that one might iterate through a list (or perhaps other collections) and the advantages or disadvantages of each.
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What does an underscore in front of an import statement mean?
...river{})
Once it's registered in this way, sqlite3 can be used with the standard library's sql interface in your code like in the example:
db, err := sql.Open("sqlite3", "./foo.db")
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