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What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an
...I, and even for Linux it's informative not normative. (But it is in fact accurate.)
This 32-bit int $0x80 ABI is usable in 64-bit code (but highly not recommended). What happens if you use the 32-bit int 0x80 Linux ABI in 64-bit code? It still truncates its inputs to 32-bit, so it's unsuitable f...
return statement vs exit() in main()
...ution when favoring exit over return.
http://groups.google.com/group/gnu.gcc.help/msg/8348c50030cfd15a
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How can I create a Makefile for C projects with SRC, OBJ, and BIN subdirectories?
...RCDIR)/%.c=$(OBJDIR)/%.o)
$(OBJECTS): $(OBJDIR)/%.o : $(SRCDIR)/%.c
$(CC) $(CFLAGS) -c $< -o $@
@echo "Compiled "$<" successfully!"
The $(TARGET) rule has the same problem that the target name does not actually describe what the rule builds. For that reason, if you type make several...
Importing CommonCrypto in a Swift framework
...dd a $(inherited) line if you have search paths defined at the project or xcconfig level.
That's it, you should now be able to import CommonCrypto
Update for Xcode 10
Xcode 10 now ships with a CommonCrypto module map making this workaround unnecessary. If you would like to support both Xcode 9 an...
Regular expression to match URLs in Java
...From its library I copied the regular expression to match URLs. I tested successfully within RegexBuddy. However, when I copied it as Java String flavor and pasted it into Java code, it does not work. The following class prints false :
...
Testing HTML email rendering [closed]
...ilchimp is not reliable. 7/10 times it's fine, but I've found on several occasions, the way certain clients are displayed in the Litmus results are not accurate with the same results I do on my own.
– davidcondrey
Jun 27 '14 at 5:27
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what’s the difference between Expires and Cache-Control headers?
...ed in HTTP/1.1 and offers more options than Expires. They can be used to accomplish the same thing but the data value for Expires is an HTTP date whereas Cache-Control max-age lets you specify a relative amount of time so you could specify "X hours after the page was requested".
HTML Cache contr...
Only get hash value using md5sum (without filename)
...the md5sum.
md5=($(md5sum file))
echo $md5
# 53c8fdfcbb60cf8e1a1ee90601cc8fe2
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Is there a performance difference between i++ and ++i in C++?
...ation units. Compiler with g++ 4.5.
Ignore the style issues for now
// a.cc
#include <ctime>
#include <array>
class Something {
public:
Something& operator++();
Something operator++(int);
private:
std::array<int,PACKET_SIZE> data;
};
int main () {
Something s...
combinations between two lists?
...gic behind how to do it? If I convert my code to C or Java, I won't have access to zip or itertools(although they make life very very easy)
– user1735075
Oct 17 '12 at 13:39
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