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What does a colon following a C++ constructor name do? [duplicate]
...ialization list, the constructor body (which happens to be empty in your example) is executed. Inside it you could do more assignments, but once you have entered it all the fields have already been initialized - either to random, unspecified values, or to the ones you chose in your initialization li...
Proper use of beginBackgroundTaskWithExpirationHandler
...ata = [NSURLConnection sendSynchronousRequest: request returningResponse: &response error: &error];
// Do something with the result
[self endBackgroundUpdateTask];
});
}
- (void) beginBackgroundUpdateTask
{
self.backgroundUpdateTask = [[UIApplication sharedApplicati...
Static methods in Python?
Is it possible to have static methods in Python which I could call without initializing a class, like:
10 Answers
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Diff files present in two different directories
...can include -x PATTERN in command to exclude certain subdirectories. For example, diff -qr repo1 repo2 -x ".git" will compare two directories (repo1 and repo2) but will exclude files in .git folder of respective directories.
– ViFI
Apr 16 at 19:15
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__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...知）就是__attribute__机制。__attribute__可以设置函数属性（Function Attribute）、变量属性（Variabl GNU C的一大特色（却不被初学者所知）就是__attribute__机制。__attribute__可以设置函数属性（Function Attribute）、变量属性（Variable Attribu...
How do I convert a Vector of bytes (u8) to a string
...ce (assuming a UTF-8 encoding):
use std::str;
//
// pub fn from_utf8(v: &[u8]) -> Result<&str, Utf8Error>
//
// Assuming buf: &[u8]
//
fn main() {
let buf = &[0x41u8, 0x41u8, 0x42u8];
let s = match str::from_utf8(buf) {
Ok(v) => v,
Err(e) =&gt...
How do I configure git to ignore some files locally?
... Just to note, I added a file to $GIT_DIR/info/exclude (e.g., my-file.php) and then had to run git update-index --assume-unchanged my-file.php for it to start being ignored. Thanks for the tip!
– tollmanz
Mar 30 '13 at 16:04
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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
...;下载链接：
       http://www.viewtool.com/index.php/22-2016-07-29-02-11-32/205-hollong-4-0-4-1-ble
4. MTU 请求（REQEUST）
   完整数据（以下关注蓝色标注部分）
   
    1)  存取地址
    Access ...
What is the worst real-world macros/pre-processor abuse you've ever come across?
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Isn't Pax's suggestion straight from K&R? Still, not worth the effort, I'd say.
– Jon Ericson
Mar 17 '09 at 2:30
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java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...
Weirdly, I found that REMOVING &characterEncoding=UTF-8 from the JDBC url did the trick for me with similar issues.
Based on my properties,
jdbc_url=jdbc:mysql://localhost:3306/dbName?useUnicode=true
I think this supports what @Esailija has said abo...