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Unicode and UTF-8 - 综合 - 清泛IT论坛，有思想、有深度
...）、和ASCII码不兼容，而且不太好移植(Not Portable)
例如：char *s=“Good ,北京”;该C语言代码采用UTF-16编码后，字节序列中间有许多’\0’，’\0’ 会被识别为字符串的终止，strlen()函数不起用了。
2）、存储空间较大，造成存储及...
【解决】double free or corruption (!prev) - C/C++ - 清泛网 - 专注C/C++及内核技术
...大小，在free的时候也会检测出来，报这个错误，如：
char* buf = malloc(5);
memcpy(buf, "123456", 6);
free(buf); //free时报此错误
实际项目中可能此类问题没法直观定位到，推荐使用gcc自带的 asan 检查内存错误。
asan 内存跟踪
Python: using a recursive algorithm as a generator
...
def getPermutations(string, prefix=""):
if len(string) == 1:
yield prefix + string
else:
for i in xrange(len(string)):
for perm in getPermutations(string[:i] + string[i+1:], prefix+string[i]):
...
python: How do I know what type of exception occurred?
...
If you want to store the traceback as a string, you can use traceback.format_exc() as well
– Stevoisiak
Jun 1 '18 at 15:18
...
How to compare arrays in JavaScript?
...als([1, 2, 1, 2]) === true;
You may say "But it is much faster to compare strings - no loops..." well, then you should note there ARE loops. First recursive loop that converts Array to string and second, that compares two strings. So this method is faster than use of string.
I believe that larger a...
Why do loggers recommend using a logger per class?
...
{
class log
{
public static async void Log(int severity, string message)
{
await Task.Run(() => LogIt(severity, message));
}
private static void LogIt(int severity, string message)
{
StackTrace st = new StackTrace();
...
Ignore mouse interaction on overlay image
...ion (for example, changing color to simulate a button), then you will need extra code attached to the javascript you will invoke on the tag, this extra code could address the 'menuOption' element through the DOM and change it's color.
Also, there is no other way I know of that you can take a click...
Format a datetime into a string with milliseconds
I want to have a datetime string from the date with milliseconds. This code is typical for me and I'm eager to learn how to shorten it.
...
Get the new record primary key ID from MySQL insert query?
... insert a row:
CREATE FUNCTION `getAutoincrementalNextVal`(`TableName` VARCHAR(50))
RETURNS BIGINT
LANGUAGE SQL
NOT DETERMINISTIC
CONTAINS SQL
SQL SECURITY DEFINER
COMMENT ''
BEGIN
DECLARE Value BIGINT;
SELECT
AUTO_INCREMENT INTO Value
FROM
info...
How does __proto__ differ from constructor.prototype?
...types' __proto__ properties point to Function.prototype. Object, Function, String, Number, and Array all inherit the Function prototype.
– Swivel
Jun 26 '13 at 21:15
...