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Chai: how to test for undefined with 'should' syntax
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typeof operator returns a string; so this assertion could not be passed; cuz 'undefined' !== undefined
– dNitro
Sep 29 '17 at 9:02
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How to check if current thread is not main thread
...d SO Java users landing here, don't forget about:
public static void main(String[] args{
Thread.currentThread().setName("SomeNameIChoose");
/*...the rest of main...*/
}
After setting this, elsewhere in your code, you can easily check if you're about to execute on the main thread with:
if...
Writing to output window of Visual Studio
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I was not seeing the Debug.WriteLine("String") until after I did what Micah said. Tools|Options|Debugging uncheck Send Output to Immediate
– Skindeep2366
Sep 25 '13 at 18:29
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scp (secure copy) to ec2 instance without password
...py.txt .
The file name shouldnt be between the pem file and the ec2-user string - that doesnt work. This also allows you to reserve the name of the copied file.
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How to set request headers in rspec request spec?
...mall gotcha that I ran into because I am silly: The header keys have to be Strings. Symbols will not show up.
– ajmurmann
Sep 27 '13 at 23:21
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Using IQueryable with Linq
...ECT c.Id, c.Name
FROM [dbo].[Customer] c
WHERE c.Region = 'North'
(the string might end up as a parameter; I can't remember)
None of this would be possible if we had just used a delegate. And this is the point of Queryable / IQueryable<T>: it provides the entry-point for using expression ...
Rails select helper - Default selected value, how?
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if params[:pid] is a string, which if it came from a form, it is, you'll probably need to use
params[:pid].to_i
for the correct item to be selected in the select list
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Pass a local file in to URL in Java
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Using Java 7:
Paths.get(string).toUri().toURL();
However, you probably want to get a URI. Eg, a URI begins with file:/// but a URL with file:/ (at least, that's what toString produces).
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How to count the number of files in a directory using Python
...mport os
onlyfiles = next(os.walk(dir))[2] #dir is your directory path as string
print len(onlyfiles)
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What does the question mark operator mean in Ruby?
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"F"[0]
or in ruby 1.9:
"F".ord
Also notice that ?F will return the string "F", so in order to make the code shorter, you can also use ?F.ord in Ruby 1.9 to get the same result as "F".ord.
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