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Static member initialization in a class template
...T>::something_relevant = 1.5;
Since it is part of a template, as with all templates the compiler will make sure it's only defined once.
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TargetedPatchingOptOut: “Performance critical to inline across NGen image boundaries”?
...le:
String.Equals has [TargetedPatchingOptOut]
You write a program that calls String.Equals
You run NGen on this program for maximum performance
NGen will inline the String.Equals call, replacing the method call instruction with the actual code in the method.
Method calls are (slightly) expensive,...
Requests — how to tell if you're getting a 404
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If you want requests to raise an exception for error codes (4xx or 5xx), call r.raise_for_status():
>>> r = requests.get('http://httpbin.org/status/404')
>>> r.raise_for_status()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "requests...
Operator precedence with Javascript Ternary operator
...it also leaves a blank space at the beginning of the string if it was initially empty. I believe the point of the ternary operation is to produce a clean-looking string.
– JMTyler
Jun 21 '11 at 22:15
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Rsync copy directory contents but not directory itself
...older itself.
rsync /var/www /home/var - copies the folder www along with all its contents.
The "/" makes the difference.
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C pointer to array/array of pointers disambiguation
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So, for 32 bit systems: int* arr[8]; /* 8x4 bytes allocated, for each pointer / int (*arr)[8]; / 4 bytes allocated, only a pointer */
– George
May 13 '09 at 18:43
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How to wait for 2 seconds?
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As mentioned in other answers, all of the following will work for the standard string-based syntax.
WAITFOR DELAY '02:00' --Two hours
WAITFOR DELAY '00:02' --Two minutes
WAITFOR DELAY '00:00:02' --Two seconds
WAITFOR DELAY '00:00:00.200' --Two tenths of a...
Can you put two conditions in an xslt test attribute?
...ments—to
add to the result tree. Their test
expressions can also use all the
tricks and operators that the xsl:if
element's test attribute can use, such
as and, or, and function calls, to
build more complex boolean
expressions.
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How to set environment variable or system property in spring tests?
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Thanks for this. The static thing didnt work but a small method with @BeforeClass worked !
– Midhun Agnihotram
Dec 30 '16 at 4:31
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What's a standard way to do a no-op in python?
...e those if statements, but for readability I find it helps to include them all, so that if you are looking through the code you can see what happens as a result of each option. How do I code the no-op? Currently, I'm doing it like this:
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