大约有 40,000 项符合查询结果（耗时：0.0257秒） [XML]
What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...nsider the Bash code:
$ false
$ echo $?
1
The C "equivalent" is:
false.c
#include <stdlib.h> /* exit */
int main(void) {
exit(1);
}
bash.c
#include <unistd.h> /* execl */
#include <stdlib.h> /* fork */
#include <sys/wait.h> /* wait, WEXITSTATUS */
#include <stdio.h&...
CSS does the width include the padding?
It seems that in IE, the width includes the padding size. while in FF, the width does not.
How can I make both behave the same?
...
Using pre-compiled headers with CMake
...:/foo/bar.h will force you to either pass the /FpC:/foo/bar.h flag or put #include <C:/foo/bar.h> at the top of all of your .cpp files as the first include statement. MSVC does a string compare of the #include arguments, it does not check whether it points to the same file as what was given to...
How to check if the URL contains a given string?
...has a toString() method. So you can do it like this:
(''+window.location).includes("franky")
or
window.location.toString().includes("franky")
From the old Mozilla docs:
Location objects have a toString
method returning the current URL. You
can also assign a string to
window.location...
C++ “virtual” keyword for functions in derived classes. Is it necessary?
...f only to keep the compiler quiet.
From a purely stylistic point-of-view, including the virtual keyword clearly 'advertises' the fact to the user that the function is virtual. This will be important to anyone further sub-classing B without having to check A's definition. For deep class hierarchi...
How to compare dates in Java? [duplicate]
...he LocalDate class in Joda-Time. That class provides methods of comparison including compareTo (used with Java Comparators), isBefore, isAfter, and isEqual.
Inputs…
String string1 = "22-02-2010";
String string2 = "07-04-2010";
String string3 = "25-12-2010";
Define a formatter describing the input...
Read whole ASCII file into C++ std::string [duplicate]
... a streambuf iterator out of the file and initialize the string with it:
#include <string>
#include <fstream>
#include <streambuf>
std::ifstream t("file.txt");
std::string str((std::istreambuf_iterator<char>(t)),
std::istreambuf_iterator<char>());
N...
Where can I locate themes for VS2012
...e been checking daily for a solution. I've now discovered this site, which includes a theme editor, as well as drumroll a VS2010 theme for VS2012!
http://bchavez.bitarmory.com/archive/2012/08/27/modify-visual-studio-2012-dark-and-light-themes.aspx
Edit - I just noticed that Brian Chavez already po...
C++ Convert string (or char*) to wstring (or wchar_t*)
...d with the standard library (C++11 and newer) alone.
The TL;DR version:
#include <locale>
#include <codecvt>
#include <string>
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
std::string narrow = converter.to_bytes(wide_utf16_source_string);
std::ws...
Get just the filename from a path in a Bash script [duplicate]
...ax> echo $b
file.txt
That unfortunately just gives you the file name, including the extension, so you'd need to find a way to strip that off as well.
So, given you have to do that anyway, you may as well find a method that can strip off the path and the extension.
One way to do that (and this...