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Fastest way to implode an associative array with keys
I'm looking for a fast way to turn an associative array in to a string. Typical structure would be like a URL query string but with customizable separators so I can use ' & ' for xhtml links or ' & ' otherwise.
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What does the restrict keyword mean in C++?
... saved, as mentioned by supercat and michael.
Consider for example:
void f(char *restrict p1, char *restrict p2, size_t size) {
for (size_t i = 0; i < size; i++) {
p1[i] = 4;
p2[i] = 9;
}
}
Because of restrict, a smart compiler (or human), could optimize that to:
mem...
Check whether a string is not null and not empty
How can I check whether a string is not null and not empty?
31 Answers
31
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How much size “Null” value takes in SQL Server
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The following link claims that if the column is variable length, i.e. varchar then NULL takes 0 bytes (plus 1 byte is used to flag whether value is NULL or not):
How does SQL Server really store NULL-s
The above link, as well as the below link, claim that for fixed length columns, i.e. char(10...
Why does Windows64 use a different calling convention from all other OSes on x86-64?
...arg[0] and arg[1] has some advantages. See cHao's comment.
?SI and ?DI are string instruction source / destination operands, and as cHao mentioned, their use as argument registers means that with the AMD64 UN*X calling conventions, the simplest possible strcpy() function, for example, only consists ...
Replace Line Breaks in a String C#
How can I replace Line Breaks within a string in C#?
17 Answers
17
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Search for all occurrences of a string in a mysql database [duplicate]
...-no-create-info --extended-insert=FALSE databasename | grep -i "<search string>"
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PostgreSQL: How to change PostgreSQL user password?
...ere's a difference, and in a DML query you have to use ' when dealing with strings, but is there a special reason to use both of them here?
– Boyan
Mar 23 '16 at 11:17
8
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Compare two folders which has many files inside contents
...trailing blanks (spaces and tabs)
and treats other strings of blanks as
equivalent.
-i Ignores the case of letters. For example,
`A' will compare equal to `a'.
-t Expands <TAB> characters in output ...
Linux编程中各种头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...务的函数原型，例如read函数、write函数和getpid函数
3. string.h
提供比如 bzero,bcopy,bcmp,memset,memcpy memcmp 等函数。
4.netdb.h定义了与网络有关的结构，变量类型，宏，函数。例如：
struct hostent *gethostbyaddr(const void *addr, size_t len, int...