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Is it safe to resolve a promise multiple times?
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You can write tests to confirm the behavior.
By running the following test you can conclude that
The resolve()/reject() call never throw error.
Once settled (rejected), the resolved value (rejected error) will be preserved
regardless of f...
Entity Framework Provider type could not be loaded?
I am trying to run my tests on TeamCity which is currently installed on my machine.
34 Answers
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Does MS SQL Server's “between” include the range boundaries?
... inclusive.
From Books Online:
BETWEEN returns TRUE if the value of
test_expression is greater than or
equal to the value of begin_expression
and less than or equal to the value of
end_expression.
DateTime Caveat
NB: With DateTimes you have to be careful; if only a date is given the ...
What is the difference between Strategy pattern and Dependency Injection?
...nt injection is not widespread and mostly used in the context of automated testing only.
Strategy focuses on intent and encourages you to create an interface with different implementations that obey the same behavioral contract. DI is more about just having an implementation of some behavior and pr...
What can I use for good quality code coverage for C#/.NET? [closed]
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I use the version of NCover that comes with TestDriven.NET. It will allow you to easily right-click on your unit test class library, and hit Test With→Coverage, and it will pull up the report.
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What is “assert” in JavaScript?
...sertion checking. Usually assertions (as they're called) are used only in "testing" or "debug" builds and stripped out of production code.
Suppose you had a function that was supposed to always accept a string. You'd want to know if someone called that function with something that wasn't a string. ...
Python - Create a list with initial capacity
... the covers, they are doing exactly the same thing, hence haven't actually tested the subject of this question. Best regards!
– Jonathan Hartley
Jul 16 '10 at 8:41
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How can I check if a file exists in Perl?
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Test whether something exists at given path using the -e file-test operator.
print "$base_path exists!\n" if -e $base_path;
However, this test is probably broader than you intend. The code above will generate output if a p...
How can I check for an empty/undefined/null string in JavaScript?
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Testing the length property may actually be faster than testing the string against "", because the interpreter won't have to create a String object from the string literal.
– Vincent Robert
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Maximum size of a element
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Updated 10/13/2014
All tested browsers have limits to the height/width of canvas elements, but many browsers also limit the total area of the canvas element. The limits are as follows for the browsers I'm able to test:
Chrome:
Maximum height/widt...