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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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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...
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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Propagate all arguments in a bash shell script
...eters from one script to another as-is and for that the best option is:
# file: parent.sh
# we have some params passed to parent.sh
# which we will like to pass on to child.sh as-is
./child.sh $*
Notice no quotes and $@ should work as well in above situation.
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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 ...
Disable browser cache for entire ASP.NET website
... This is exactly what I was looking for... during dev, if I change a .js file, it's a major pain to get that to come through immediately when I'm trouble to do little troubleshoot/refresh/test cycles. This is perfect, thank you! Just made my client side debugging life far easier
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Why am I suddenly getting a “Blocked loading mixed active content” issue in Firefox?
...ers may be innocent, all the routers carrying http request may be not. I'd file a bug report to site owners.
– alpha-mouse
Oct 1 '13 at 12:48
6
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How do you get the index of the current iteration of a foreach loop?
...numeration, and cannot be done." -- This is nonsense, as the answers by David B and bcahill make clear. An index is an enumeration over a range, and there's no reason one cannot enumerate two things in parallel ... that's exactly what the indexing form of Enumerable.Select does.
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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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