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char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C/C++及内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
https://www.tsingfun.com/it/cp... 

char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C/C++及内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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std::string的截取字符串的方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

std::string的截取字符串的方法例如截取ip:port,代码如下:std::string ip("127.0.0.1:8888");int index = ip.find_last_of(':'); ipip.substr(0, index)....例如截取ip:port,代码如下: std::string ip("127.0.0.1:8888"); int index = ip.find_last_of(':'); //ip ip.substr(0, in...
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How do I convert from BLOB to TEXT in MySQL?

...ROUP_CONCATs that convert your output to blobs and you really want them as strings. I had an issue similar to the OP's while using Node.JS with the node-mysql library - this fixed all group_concat issues. – marksyzm Jul 26 '13 at 13:53 ...
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How to compare strings ignoring the case

... You're looking for casecmp. It returns 0 if two strings are equal, case-insensitively. str1.casecmp(str2) == 0 "Apple".casecmp("APPLE") == 0 #=> true Alternatively, you can convert both strings to lower case (str.downcase) and compare for equality. ...
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How to automatically generate a stacktrace when my program crashes

...gnal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ucontext.h> #include <unistd.h> /* This structure mirrors the one found in /usr/include/asm/ucontext.h */ typedef struct _sig_ucontext { unsigned long uc_flags; ucontext_t *uc_...
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How is a non-breaking space represented in a JavaScript string?

...e manually it in its Javascript escaped form: var x = td.text(); if (x == String.fromCharCode(160)) { // Non-breakable space is char 160 x = ''; } More information about String.fromCharCode is available here: fromCharCode - MDC Doc Center More information about character codes for differe...
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Webrick as production server vs. Thin or Unicorn?

...k, Sinatra, Rails, custom Webrick code, etc). This requires you to spin up extra ruby "handlers" to perform your rewrite code. For a low traffic site, this may be fine as you may have pre-warmed processes doing nothing already. However, for a higher traffic site, this is extra load on the server for...
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How to convert a Title to a URL slug in jQuery?

...ield').val()) original by: http://dense13.com/blog/2009/05/03/converting-string-to-slug-javascript/ EDIT: extended for more language specific chars: var from = "ÁÄÂÀÃÅČÇĆĎÉĚËÈÊẼĔȆĞÍÌÎÏİŇÑÓÖÒÔÕØŘŔŠŞŤÚŮÜÙÛÝŸŽáäâàãåčçćďéěëèêẽĕȇğí...