大约有 40,000 项符合查询结果（耗时：0.0593秒） [XML]
Python nonlocal statement
...
@Dustin - Actually, if you had class A with an attribute x and a subclass B defined in it, you would refer to x from within B as A.x
– Anon
Aug 11 '09 at 18:37
...
Find full path of the Python interpreter?
...3 and it printed the correct executable. I also tried with no shebang and called the script with the python and python3 commands and it printed the correct executable.
– David Baucum
Oct 10 '19 at 13:18
...
Passing Data between View Controllers
...h it onto nav stack.
ViewControllerB *viewControllerB = [[ViewControllerB alloc] initWithNib:@"ViewControllerB" bundle:nil];
viewControllerB.isSomethingEnabled = YES;
[self pushViewController:viewControllerB animated:YES];
This will set isSomethingEnabled in ViewControllerB to BOOL value YES.
P...
How to create streams from string in Node.Js?
...g"])
readable.on("data", (chunk) => {
console.log(chunk) // will be called once with `"input string"`
})
Note that at least between 10.17 and 12.3, a string is itself a iterable, so Readable.from("input string") will work, but emit one event per character. Readable.from(["input string"]) wil...
Difference between exit() and sys.exit() in Python
...raising SystemExit. sys.exit does so in sysmodule.c:
static PyObject *
sys_exit(PyObject *self, PyObject *args)
{
PyObject *exit_code = 0;
if (!PyArg_UnpackTuple(args, "exit", 0, 1, &exit_code))
return NULL;
/* Raise SystemExit so callers may catch it or clean up. */
PyE...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1...
...转换为“const std::allocator &”错误日志：error C2664: std::list<_Ty>::list(const std::allocator<_Ty> &): 不能将参数 1 从std::vector<_Ty>转换为const std::...错误日志：
error C2664: “std::list<_Ty>::list(const std::allocator<_Ty> &)”: 不能将参数 1 从
“std::vect...
binning data in python with scipy/numpy
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How do I declare class-level properties in Objective-C?
...mething that's equivalent to a static variable? E.g. only one instance for all types of Foo?
To declare class functions in Objective-C you use the + prefix instead of - so your implementation would look something like:
// Foo.h
@interface Foo {
}
+ (NSDictionary *)dictionary;
// Foo.m
+ (NSDicti...
Can't install Ruby under Lion with RVM – GCC issues
...1.9.3 --enable-shared (substituting the path to your non-LLVM gcc).
Edit: https://github.com/kennethreitz/osx-gcc-installer/downloads may help for installing GCC. There is also some info available by running rvm requirements.
Edit 2: For an easier solution, you can try adding --with-gcc=clang to t...
How to modify Github pull request？
...est PATCH \
--data '{"title":"newtitle","body":"newbody",...}' \
https://api.github.com/repos/:owner/:repo/pulls/:number
you can find the detailled list of data in github developer doc
example : change name of my pull request
curl --user "jeremyclement" \
--request PATCH \
--dat...