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How does one use rescue in Ruby without the begin and end block
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I'm using the def / rescue combination a lot with ActiveRecord validations:
def create
@person = Person.new(params[:person])
@person.save!
redirect_to @person
rescue ActiveRecord::RecordInvalid
render :action => :new
end
I think this is very lean code!
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Rails: How to list database tables/objects using the Rails console?
...cts').map(&:name)
You should probably wrap them in shorter syntax inside your .irbrc.
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Amazon S3 Change file download name
I have files stored on S3 with a GUID as the key name.
7 Answers
7
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How to indicate param is optional using inline JSDoc?
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I was asking how to do it inline. The example you are providing seem to be the same as what I showed in my question.
– studgeek
Apr 9 '16 at 4:04
add a commen...
Count cells that contain any text
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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Python argparse ignore unrecognised arguments
...all unrecognised arguments and carries on. In most situations, this isn't ideal and was changed in argparse. But there are a few situations where you want to ignore any unrecognised arguments and parse the ones you've specified.
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is there an easy way to get the http status code in the failure block from AFHTTPClient?
...eachable/timeout, httpStatusCode will be always 0.
Alternatively you can identify the issue by understanding the operationStatusCode. It is a NSError Object.
If it cannot reach/timeout/no network to process request, the operationStatusCode will be -1009.
If you cancel the operations queue the ...
postgresql port confusion 5433 or 5432?
... have installed. I don't use Mac and can't offer much more detail on that side without spending more time than is currently available.
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What is the difference between “AS” and “IS” in an Oracle stored procedure?
...instead of the IS keyword for creating a
standalone procedure.
and considering previous answers,
I guess
AS is for stand alone (outside of any block, subprogram, package) entities
and
IS is for embedded (within a block, subprogram or package) entities.
.
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To find whether a column exists in data frame or not
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Thanks for this, colnames didn't work for me but names did.
– Docconcoct
Dec 20 '17 at 10:35
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