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Stop all active ajax requests in jQuery
...uld use an array keeping track of all pending ajax requests and abort them if necessary.
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How do I check if an element is really visible with JavaScript? [duplicate]
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I don't know how much of this is supported in older or not-so-modern browsers, but I'm using something like this (without the neeed for any libraries):
function visible(element) {
if (element.offsetWidth === 0 || element.offsetHeig...
C# Float expression: strange behavior when casting the result float to int
...igher precision than the formal type (section 11.2.2). That's why you see different behavior on different systems: In the expression (int)(6.2f * 10), the compiler has the option of keeping the value 6.2f * 10 in a high precision intermediate form before converting to int. If it does, then the resul...
What is digest authentication?
...yea, that's very simplified)
The server takes username and realm (plus it knows the URI the client is requesting) and it looks up the password for that username. Then it goes and does its own version of generate_md5_key(nonce, username, realm, URI, password_I_have_for_this_user_in_my_db)
It compares...
Counting the Number of keywords in a dictionary in python
...
len(yourdict.keys())
or just
len(yourdict)
If you like to count unique words in the file, you could just use set and do like
len(set(open(yourdictfile).read().split()))
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Can I implement an autonomous `self` member type in C++?
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class WITH_SELF(Foo)
{
void test()
{
self foo;
}
};
If you want to derive from Foo then you should use the macro WITH_SELF_DERIVED in the following way:
class WITH_SELF_DERIVED(Bar,Foo)
{
/* ... */
};
You can even do multiple inheritance with as many base classes as you...
Linux 进程卡住了怎么办？ - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...发现 ls 卡住了。
通过下面的命令可以看到 ls 卡在了 vfs_fstatat 调用上，它会给 FUSE 设备发送 getattr 请求，在等待回应。而 JuiceFS 客户端进程已经被我们停掉了，所以它就卡住了：
$ cat /proc/`pgrep ls`/stack
[<ffffffff813277c7>] request_w...
Prototypical inheritance - writing up [duplicate]
... function it uses this. The value of this will be the invoking object; for now let's say it's the current instance so for bob.walk() "this" will be bob. (more on "this" and the invoking object later).
If ben was waiting for a red light and and bob was at a green light; then you'll invoke walk() on ...
Android: Getting a file URI from a content URI?
... Check the scheme of the URI returned to you from the chooser activity. If if uri.getScheme.equals("content"), open it with a content resolver. If the uri.Scheme.equals("file"), open it using normal file methods. Either way, you'll end up with an InputStream that you can process using common code...
Creating .pem file for APNS?
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I have followed the above steps and now its working.I have kept the certificate and the php script on my local web server (Xampp). I am able to get the device token , and i am using it in the php script. The php script is able to connect and send payload data....