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C++: what regex library should I use? [closed]
... slated to become part of the C++0x standard (it's already in TR1).
Personally, I find Boost.Xpressive much nicer to work with. It is a header-only library and it has some nice features such as static regexes (regexes compiled at compile time).
Update: If you're using a C++11 compliant compiler (g...
What is the printf format specifier for bool?
...sing a single char * to printf() is considered bad practice because it's really supposed to be a format string, and an unescaped percent sign might cause your program to blow up (see here for more). Thus, printf("%s", ...) is safer. If you're not doing any actual formatting to begin with, the printf...
Unit Testing C Code [closed]
...such need special options, but this may not be a big problem to you, especially if you are already using GTK or GLib. See the GNU Autounit homepage.
cUnit
Also uses GLib, but does not fork to protect the address space of unit tests.
CUnit
Standard C, with plans for a Win32 GUI implementation. Does n...
TCP: can two different sockets share a port?
...
A server socket listens on a single port. All established client connections on that server are associated with that same listening port on the server side of the connection. An established connection is uniquely identified by the combination of client-side and serv...
Check if a JavaScript string is a URL
...{1,3}\\.){3}\\d{1,3}))'+ // OR ip (v4) address
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string
'(\\#[-a-z\\d_]*)?$','i'); // fragment locator
return !!pattern.test(str);
}
...
BBC micro:bit 平台 · App Inventor 2 中文网
...
最新 BBC micro:bit AppInventor2 拓展下载：
com.bbc.microbit.profile-20200518.aix
图片来源:
关于 | micro:bit
实验系列：跟着做，一篇一个成果
每篇一个闭环小实验：器材清单 → 接线 → 分步搭（每步都能中途验证）...
How do I break out of a loop in Scala?
...nt) {
sum += i; if (sum < max) addTo(i+1,max)
}
addTo(0,1000)
(1c) Fall back to using a while loop
var sum = 0
var i = 0
while (i <= 1000 && sum <= 1000) { sum += 1; i += 1 }
(2) Throw an exception.
object AllDone extends Exception { }
var sum = 0
try {
for (i <- 0 to 1...
What is the native keyword in Java for?
...tation doesn’t have to use JNI. Certain JRE methods are handled intrinsically by the JVM. In fact, it’s not even mandatory that the implementation is actually native code. It’s just “implemented in a language other than the Java programming language”.
– Holger
...
How to print the ld(linker) search path
...he spot. I have a linking problem, during linking process linker finds manually installed libraries in /usr/local/.. which causes missing library error, and linking fails. I have to rename /usr/local everytime to exclude that search path. Is there a simple way to exclude or override /usr/local path?...
How to make Visual Studio copy a DLL file to the output directory?
I have a Visual Studio C++ project that relies on an external DLL file. How can I make Visual Studio copy this DLL file automatically into the output directory (debug/release) when I build the project?
...