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What does the “===” operator do in Ruby? [duplicate]
I've seen it used a few times lately but can't figure out what it does. Can anyone illustrate how it works?
3 Answers
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How can I hide an HTML table row so that it takes up no space?
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How to define an alias in fish shell?
I would like to define some aliases in fish. Apparently it should be possible to define them in
9 Answers
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How to close Android application?
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Android has a mechanism in place to close an application safely per its documentation. In the last Activity that is exited (usually the main Activity that first came up when the application started) just place a couple of lines in the onD...
Version of Apache installed on a Debian machine
...ntu 12.04 and I believe a lot of people are still using Ubuntu 12.04, like me, who don't want to upgrade to 14 yet until all bugs with various software are eliminated complete.y
– JohnMerlino
Jul 15 '14 at 21:25
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How to get record created today by rails activerecord?
How should I write the conditional statement for when I want to get all the records which were created today?
10 Answers
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serve current directory from command line
could someone give me a hint, howto serve the current directory from command line with ruby? it would be great, if i can have some system wide configuration (e.g. mime-types) and simply launch it from every directory.
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Regex empty string or email
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Something to consider, doing ^(|.*@.*\..*)$ should have the same effect as it says either blank or this with only using ^ and $ once, to tidy it up a bit.
– Runevault
Feb 24 '12 at 18:20
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How do you change the datatype of a column in SQL Server?
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ALTER TABLE TableName
ALTER COLUMN ColumnName NVARCHAR(200) [NULL | NOT NULL]
EDIT
As noted NULL/NOT NULL should have been specified, see Rob's answer as well.
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How to iterate over a JSONObject?
...();
if (jsonObject.get(key) instanceof JSONObject) {
// do something with jsonObject here
}
}
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