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How to avoid 'cannot read property of undefined' errors?
In my code, I deal with an array that has some entries with many objects nested inside one another, where as some do not. It looks something like the following:
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Where does gcc look for C and C++ header files?
...print-prog-name=cc1plus` -v
This command asks gcc which C++ preprocessor it is using, and then asks that preprocessor where it looks for includes.
You will get a reliable answer for your specific setup.
Likewise, for the C preprocessor:
`gcc -print-prog-name=cpp` -v
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Centering a background image, using CSS
...age: url(path-to-file/img.jpg);
background-repeat:no-repeat;
background-position: center center;
That should work.
If not, why not make a div with the image and use z-index to make it the background? This would be much easier to center than a background image on the body.
Other than that try:
b...
How Many Seconds Between Two Dates?
...(Seconds_from_T1_to_T2);
A handy source for future reference is the MDN site
Alternatively, if your dates come in a format javascript can parse
var dif = Date.parse(MM + " " + DD + ", " + YYYY) - Date.parse(NN + " " + EE + ", " + ZZZZ);
and then you can use that value as the difference in mill...
How to format a java.sql Timestamp for displaying?
...follow
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edited Mar 22 '18 at 12:12
Rodrigue
3,32522 gold badges3434 silver badges4646 bronze badges
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Unittest setUp/tearDown for several tests
...ise your best bet is probably going to be to create your own derived TestSuite and override run(). All other calls would be handled by the parent, and run would call your setup and teardown code around a call up to the parent's run method.
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Can I create a One-Time-Use Function in a Script or Stored Procedure?
...of a SQL script or Stored Procedure? I'd like to abstract away some complexity in a script I'm writing, but it would require being able to declare a function.
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Is there a Mutex in Java?
...t in java or a way to create one?
I am asking because a Semaphore object initialized with 1 permit does not help me.
Think of this case:
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Difference between Mock / Stub / Spy in Spock test framework
...in the upcoming paragraphs. For more detailed info see Martin Fowler's website.
A mock is a dummy class replacing a real one, returning something like null or 0 for each method call. You use a mock if you need a dummy instance of a complex class which would otherwise use external resources like net...
What does “dereferencing” a pointer mean?
Please include an example with the explanation.
6 Answers
6
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