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How to ignore whitespace in a regular expression subject string?
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You can stick optional whitespace characters \s* in between every other character in your regex. Although granted, it will get a bit lengthy.
/cats/ -> /c\s*a\s*t\s*s/
share
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SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
...table). In comment you said you want it in yyyy-mm-dd format. So, try this SELECT CONVERT(char(10), GetDate(),126). Just replace GETDATE() with necessary value.
– Mahe
Dec 30 '13 at 15:29
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When do we have to use copy constructors?
...at is not sufficient. For example:
class Class {
public:
Class( const char* str );
~Class();
private:
char* stored;
};
Class::Class( const char* str )
{
stored = new char[srtlen( str ) + 1 ];
strcpy( stored, str );
}
Class::~Class()
{
delete[] stored;
}
in this case memb...
内存调试技巧：C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术
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清单 1. 简单的潜在堆内存丢失和缓冲区覆盖
void f1(char *explanation)
{
char p1;
p1 = malloc(100);
(void) sprintf(p1,
"The f1 error occurred because of '%s'.",
explanation);
loca...
How does HTTP file upload work?
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Let's take a look at what happens when you select a file and submit your form (I've truncated the headers for brevity):
POST /upload?upload_progress_id=12344 HTTP/1.1
Host: localhost:3000
Content-Length: 1325
Origin: http://localhost:3000
... other headers ...
Conten...
How to Store Historical Data
...erform an insert statement into FOO_Hist similar to: insert into FOO_HIST select * from FOO where id = @id .
13 Answers
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Why does the C preprocessor interpret the word “linux” as the constant “1”?
...LT_MIN__ 1.17549435082228750797e-38F
#define __UINT_LEAST8_TYPE__ unsigned char
#define __INTMAX_C(c) c ## L
#define __CHAR_BIT__ 8
#define __UINT8_MAX__ 255
#define __WINT_MAX__ 2147483647
#define __ORDER_LITTLE_ENDIAN__ 1234
#define __SIZE_MAX__ 18446744073709551615UL
#define __WCHAR_MAX__ 2147483...
How to parse a string to an int in C++?
What's the C++ way of parsing a string (given as char *) into an int? Robust and clear error handling is a plus (instead of returning zero ).
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Converting string to title case
I have a string which contains words in a mixture of upper and lower case characters.
23 Answers
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Simple way to repeat a String in java
...e is the shortest version (Java 1.5+ required):
repeated = new String(new char[n]).replace("\0", s);
Where n is the number of times you want to repeat the string and s is the string to repeat.
No imports or libraries needed.
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