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Is the != check thread safe?
...ticular machine and a particular Java implementation, does not preclude it from happening in other circumstances.
Does this mean that a != a could return true.
Yes, in theory, under certain circumstances.
Alternatively, a != a could return false even though a was changing simultaneously.
C...
How to assign the output of a command to a Makefile variable
...gnment in an eval is working for me.
# dependency on .PHONY prevents Make from
# thinking there's `nothing to be done`
set_opts: .PHONY
$(eval DOCKER_OPTS = -v $(shell mktemp -d -p /scratch):/output)
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Declaration/definition of variables locations in ObjectiveC?
...u were able to access these variables only in your implementation, but not from other classes. To do that, you had to declare accessor methods, that look something like this:
// MyClass.h
@interface MyClass : NSObject {
int myVar;
}
- (int)myVar;
- (void)setMyVar:(int)newVar;
@end
// MyClas...
Windows XP or later Windows: How can I run a batch file in the background with no window displayed?
...u can use start /b second.bat to launch a second batch file asynchronously from your first that shares your first one's window. If both batch files write to the console simultaneously, the output will be overlapped and probably indecipherable. Also, you'll want to put an exit command at the end of...
in javascript, how can i get the last character in a string [duplicate]
... Nice—and this is slightly faster. See jsperf.com/get-last-character-from-string
– ryanve
Jan 2 '12 at 1:03
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Simple Getter/Setter comments
...dding noise to your code for the sake of silencing overly pedantic warning from our tools feels wrong to me. If it doesn't add value to a programmer, then the right solution would be to turn down/fix the verbosity of the tools and/or ease up on how much we care about jumping through hoops so that th...
What is the equivalent of MATLAB's repmat in NumPy
...n the direction of columns, rows and out-of-plane dimension are being read from right to left. The resulting object has a different shape from Matlab. One can no longer assert that repmat and tile are equivalent instructions.
In order to get tile to behave like repmat, in Python one has to make s...
Why do we need Abstract factory design pattern?
...ery one of the linked answers; so this list is NOT a representative sample from the SO community.
– jaco0646
Jul 16 '16 at 14:24
1
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Python list subtraction operation
...] gives [1,1] So it is not really list substraction, it is more like "List from List X without elements from set Y".
– Alfred Zien
Feb 6 '16 at 10:25
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File inside jar is not visible for spring
...ou are using resource.getInputStream() not resource.getFile() when loading from inside a jar file.
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