大约有 40,000 项符合查询结果（耗时：0.0557秒） [XML]
Linux: is there a read or recv from socket with timeout?
...
tv.tv_usec = 0;
setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof tv);
// WINDOWS
DWORD timeout = timeout_in_seconds * 1000;
setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timeout, sizeof timeout);
// MAC OS X (identical to Linux)
struct timeval tv;
tv.tv_sec...
What does Python's eval() do?
...less until you find a need for it. It is used on sites like codepad.org to allow you to execute scripts in a test environment. eval() can also be used to execute highly-dynamic code, but you should make yourself fully aware of the security and performance risks before using it.
...
How to find the 'sizeof' (a pointer pointing to an array)?
... is the one mentioned by Zan, which is to stash the size somewhere. For example, if you're dynamically allocating the array, allocate a block one int bigger than the one you need, stash the size in the first int, and return ptr+1 as the pointer to the array. When you need the size, decrement the p...
How do I retrieve my MySQL username and password?
...e server to reload the grant tables into memory.
Save the file. For this example, the file will be named C:\mysql-init.txt.
Open a console window to get to the command prompt:
Start Menu -> Run -> cmd
Start the MySQL server with the special --init-file option:
C:\> C:\mysql\bin\...
How to detect if my shell script is running through a pipe?
...sh shell answer. Using test is neat, but I cannot try the parenthesized example as that is not supported. Tried wrapping it in an analogous begin; ...; end, but that did not seem to work, and just ran the positive code block again. Thought I might need to use status but that doesn't seem to check...
ViewPager with Google Maps API v2: mysterious black view
...
@Lubos Horacek : Could you please post a sample code.I am getting Null pointer exception error..
– avinash
Jul 10 '13 at 12:23
add a comment
...
How to add property to a class dynamically?
...ing on. Better late than never.
You can add a property to a class dynamically. But that's the catch: you have to add it to the class.
>>> class Foo(object):
... pass
...
>>> foo = Foo()
>>> foo.a = 3
>>> Foo.b = property(lambda self: self.a + 1)
>>&...
What's “tools:context” in Android layout files?
...ion of ADT, I've noticed this new attribute on the layout XML files, for example:
9 Answers
...
Generating PDF files with JavaScript
... thought I'd come back and let you know :)
Generate PDFs in Javascript
Example create a "Hello World" PDF file.
// Default export is a4 paper, portrait, using milimeters for units
var doc = new jsPDF()
doc.text('Hello world!', 10, 10)
doc.save('a4.pdf')
<script src="https://cdnjs.clo...
Archives not showing up in Organizer for Xcode 4
...guration used for archiving. Make sure it has the right entitlements file & certificates.
In the build settings switch Skip Install -> Release to NO, for the build settings used for archiving.
Make sure the archives folder and XCode project files are inside the same shared folder if network d...