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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
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Ruby's string % operator is too unappreciated and oft forgotten.
"%02d:%02d:%02d:%02d" % [t/86400, t/3600%24, t/60%60, t%60]
Given t is a duration in seconds, this emits a zero-padded colon-separated string including days. Exampl...
Unix command to prepend text to a file
Is there a Unix command to prepend some string data to a text file?
16 Answers
16
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MySQL LIKE IN()?
...like FIELDNAME LIKE '%%', how to use it with regexp, so that when an empty string is passed. it should fetch all the records..
– shzyincu
Jul 28 '16 at 14:09
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How to use NSJSONSerialization
I have a JSON string (from PHP's json_encode() that looks like this:
12 Answers
12
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Cannot simply use PostgreSQL table name (“relation does not exist”)
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Put the dbname parameter in your connection string. It works for me while everything else failed.
Also when doing the select, specify the your_schema.your_table like this:
select * from my_schema.your_table
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What is the difference between `Enum.name()` and `Enum.toString()`? [duplicate]
After reading the documentation of String java.lang.Enum.name() I am not sure I understand when to use name() and when to use toString() .
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Set selected radio from radio group with a value
...From the documentation: "Can be either an unquoted single word or a quoted string."
– Felix Kling
Nov 15 '13 at 8:00
5
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POST JSON to API using Rails and HTTParty
... adding .to_json and some heading information
@result = HTTParty.post(@urlstring_to_post.to_str,
:body => { :subject => 'This is the screen name',
:issue_type => 'Application Problem',
:status => 'Open',
:priority => 'Normal',
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How to get nth jQuery element
... .eq() is more appropriate for the OP's question. :eq() is used within the string parameter to $, whereas .eq() is a method on an existing jQuery object.
– mjswensen
Apr 16 '14 at 19:46
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json.net has key method?
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JObject implements IDictionary<string, JToken>, so you can use:
IDictionary<string, JToken> dictionary = x;
if (dictionary.ContainsKey("error_msg"))
... or you could use TryGetValue. It implements both methods using explicit interface implement...