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C pointers : pointing to an array of fixed size
... an array to a function is by using a pointer-to-array parameter
void foo(char (*p)[10]);
(in C++ language this is also done with references
void foo(char (&p)[10]);
).
This will enable language-level type checking, which will make sure that the array of exactly correct size is supplied a...
How can I start an interactive console for Perl?
...
I wrote a script I call "psh":
#! /usr/bin/perl
while (<>) {
chomp;
my $result = eval;
print "$_ = $result\n";
}
Whatever you type in, it evaluates in Perl:
> gmtime(2**30)
gmtime(2**30) = Sat Jan 10 13:37:04 2004
>...
MySQL: Order by field size/length
...DER BY LENGTH(description) DESC;
The LENGTH function gives the length of string in bytes. If you want to count (multi-byte) characters, use the CHAR_LENGTH function instead:
SELECT * FROM TEST ORDER BY CHAR_LENGTH(description) DESC;
...
Exact difference between CharSequence and String in java [duplicate]
...ost . Can any one say what the exact difference between CharSequence and String is, other than the fact that String implements CharSequence and that String is a sequence of character? For example:
...
How to get a tab character?
...ive to be more complete. When I tried the "pre" based answers, they added extra vertical line breaks as well.
Each tab can be converted to a sequence non-breaking spaces which require no wrapping.
"&nbsp;&nbsp;&nbsp;&nbsp;"
This is not recommended for repeated/extensive use...
Force unmount of NFS-mounted directory [closed]
...ing (including lsof). I caused the problem by breaking out of a backup script that I'm writing. The script mounts and unmounts the directory, but something about breaking out of rsync messed up my mount. I didn't know about the lazy unmount. It may have been the NAS device causing all the troubl...
How to split a delimited string in Ruby and convert it to an array?
I have a string
5 Answers
5
...
Check if a string contains a string in C++
I have a variable of type std::string . I want to check if it contains a certain std::string . How would I do that?
12 ...
char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注IT技能提升
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...
char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注IT技能提升
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...