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setTimeout / clearTimeout problems
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answered Jul 28 '18 at 11:32
Kino BacaltosKino Bacaltos
18611 silver badge1515 bronze badges
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How to use the pass statement?
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I really don't think this properly answers the question. Citing one possible use for something, even if it is the most common use for it, is not the same as explaining what it is for.
– Schilcote
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C++0x has no semaphores? How to synchronize threads?
...ck Overflow regarding the use of semaphores. I use them (posix semaphores) all the time to let a thread wait for some event in another thread:
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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00000110 55 50 58 20 54 65 61 6D 2E 20 41 6C 6C 20 52 69 UPX Team. All Ri
00000120 67 68 74 73 20 52 65 73 65 72 76 65 64 2E 20 24 ghts Reserved. $
从上面的信息中可以看到程序被UPX压缩了，接下来请确信你系统中已有UPX，如果没有请到上面给...
How can I reliably get an object's address when operator& is overloaded?
...argument and returning no result. This reference to a function can be trivially converted into a pointer to function -- from @Konstantin: According to 13.3.3.2 both T & and T * are indistinguishable for functions. The 1st one is an Identity conversion and the 2nd one is Function-to-Pointer conve...
Change all files and folders permissions of a directory to 644/755
How would I change all files to 644 and all folders to 755 using chmod from the linux command prompt? (Terminal)
8 Answ...
std::unique_ptr with an incomplete type won't compile
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I find your first solution (adding the foo destructor) allows the class declaration itself to compile, but declaring an object of that type anywhere results in the original error ("invalid application of 'sizeof'...").
– Jeff Trull
Sep 30 '1...
Java regex email
First of all, I know that using regex for email is not recommended but I gotta test this out.
20 Answers
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Select distinct values from a table field
...ant any ordering to be applied to a query, not even the default ordering, call order_by() with no parameters.
and distinct() in the note where it discusses issues with using distinct() with ordering.
To query your DB, you just have to call:
models.Shop.objects.order_by().values('city').distinct(...
Golang: How to pad a number with zeros when printing?
...ere is one simplest way to achieve this. Use
func padNumberWithZero(value uint32) string {
return fmt.Sprintf("%02d", value)
}
fmt.Sprintf formats and returns a string without printing it anywhere.
Here %02d says pad zero on left for value who has < 2 number of digits. If given value has 2...