大约有 16,000 项符合查询结果（耗时：0.0324秒） [XML]
How to Correctly handle Weak Self in Swift Blocks with Arguments
...shing when you use [unowned self] I would guess that self is nil at some point in that closure, which is why you had to go with [weak self] instead.
I really liked the whole section from the manual on using strong, weak, and unowned in closures:
https://developer.apple.com/library/content/documen...
Is Big O(logn) log base e?
...algorithm's run-time.
In big-O() notation, constant factors are removed. Converting from one logarithm base to another involves multiplying by a constant factor.
So O(log N) is equivalent to O(log2 N) due to a constant factor.
However, if you can easily typeset log2 N in your answer, doing so is...
How can I display an RTSP video stream in a web page?
...load a single RTSP stream to centrally-hosted streaming server, which will convert your stream to RTMP/MPEG-TS and publish it to Flash players/Set-Top boxes.
Wowza, Erlyvideo, Unreal Media Server, Red5 are your options.
sh...
Using a ListAdapter to fill a LinearLayout inside a ScrollView layout
.... // Your linear layout.
ListAdapter adapter = ... // Your adapter.
final int adapterCount = adapter.getCount();
for (int i = 0; i < adapterCount; i++) {
View item = adapter.getView(i, null, null);
layout.addView(item);
}
EDIT: I rejected this approach when I needed to display about 200 n...
What's the need of array with zero elements?
... However, when a . (or ->) operator has a left operand that is
(a pointer to) a structure with a flexible array member and the right operand names that
member, it behaves as if that member were replaced with the longest array (with the same
element type) that would not make the struc...
What does the ??!??! operator do in C?
...sign of sophistication. Besides being really the only decent OS, Unix also converted your upper case to lower, rather than vice versa. Those guys were really cool.
– DigitalRoss
Oct 26 '11 at 2:45
...
Use URI builder in Android or create URL with variables
...
No need convert UTF8 content?
– Webserveis
Apr 5 '17 at 20:24
add a comment
|
...
How to create a file in memory for user to download, but not through server?
... The correct charset is almost certainly UTF-16, unless you have code converting it to UTF-8. JavaScript uses UTF-16 internally. If you have a text or CSV file, start the string with '\ufeff', the Byte Order Mark for UTF-16BE, and text editors will be able to read non-ASCII characters correctly...
Regex for splitting a string using space when not surrounded by single or double quotes
...ar expression' matches something.";
str = str + " "; // add trailing space
int len = str.length();
Matcher m = Pattern.compile("((\"[^\"]+?\")|('[^']+?')|([^\\s]+?))\\s++").matcher(str);
for (int i = 0; i < len; i++)
{
m.region(i, len);
if (m.lookingAt())
{
String s = m.grou...
Uploading Files in ASP.net without using the FileUpload server control
...leName = MyFile.FileName;
//Determining file size.
int FileSize = MyFile.ContentLength;
//Creating a byte array corresponding to file size.
byte[] FileByteArray = new byte[FileSize];
//Posted file is being pushed into byte array.
...