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How does std::forward work? [duplicate]
...und how it works. Please be as detailed as possible and explain when std::forward would be incorrect if it was allowed to use template argument deduction.
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Avoid browser popup blockers
... The 1 second timeout can be circumvented in both browsers allowing for an indefinite amount of time using the answer by @t-j-crowder on this page .. have the URL you're calling via ajax be some php (or whatever) that uses sleep() for an amount of time before it returns a response. The browse...
python assert with and without parenthesis
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The reason is doesn't happen for assert (1==2) is parentheses around a single expression won't create a tuple automatically; you'd get the same behavior as #4 if you did assert (1==2,). The same thing would happen if you did print ('foo', 'bar') instead ...
AJAX POST and Plus Sign ( + ) — How to Encode?
I'm POSTing the contents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents) . The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then appropriately 'decode' it on the PHP side?
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Django FileField with upload_to determined at runtime
...dels.Model):
name = models.CharField(max_length=200)
user = models.ForeignKey(User)
file = models.FileField(upload_to=content_file_name)
As you can see, you don't even need to use the filename given - you could override that in your upload_to callable too if you liked.
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[精华]VC++对话框程序打印及打印预览的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...注意粗体部分）：
MyPreviewView.h
// MyPreviewView.h: interface for the CMyPreviewView class.
//
////////////////////////////////////////
#if !defined(AFX_MYPREVIEWVIEW_H__0AE8B670_B1AE_11DA_812E_00E04C39032F__INCLUDED_)
#define AFX_MYPREVIEWVIEW_H__0AE8B670_B1AE_11DA_812E_00E04C39032...
Difference between passing array and array pointer into function in C
... static also appears within the [ and ] of the
array type derivation, then for each call to the function, the value of the corresponding
actual argument shall provide access to the first element of an array with at least as many
elements as specified by the size expression.
So, in short, any funct...
How do I set a variable to the output of a command in Bash?
...e with $(command) or "$(command)", which I find easier to read, and allows for nesting.
OUTPUT=$(ls -1)
echo "${OUTPUT}"
MULTILINE=$(ls \
-1)
echo "${MULTILINE}"
Quoting (") does matter to preserve multi-line variable values; it is optional on the right-hand side of an assignment, as word spl...
Find merge commit which include a specific commit
...merge commits in the history line between c and master:
git log <SHA-1_for_c>..master --ancestry-path --merges
This will however also show all the merges that happened after h, and between e and g on feature.
Comparing the result of the following commands:
git rev-list <SHA-1_for_c&g...
Is it ok to use dashes in Python files when trying to import them?
...
You should check out PEP 8, the Style Guide for Python Code:
Package and Module Names Modules should have short, all-lowercase names. Underscores can be used in the module name if it improves readability. Python packages should also have short, all-lowercase names, al...