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Creating a new directory in C
...;sys/stat.h>
#include <sys/types.h>
int result = mkdir("/home/me/test.txt", 0777);
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Forward declaration of nested types/classes in C++
... // class D { };
A::B *someField;
};
int main() {
A a;
C::D * test = a.someField; // here it can be called C::D
}
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phonegap open link in browser
...a 3.4.1 and android 4.2. I did not need a plugin. I will report back after testing on iOS7.
– pgsandstrom
May 4 '14 at 17:17
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Does Ruby regular expression have a not match operator like “!~” in Perl?
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Back in perl, 'foobar' !~ /bar/ was perfectly perlish to test that the string doesn't contain "bar".
In Ruby, particularly with a modern style guide, I think a more explicit solution is more conventional and easy to understand:
input = 'foobar'
do_something unless input.match?(/ba...
When saving, how can you check if a field has changed?
...Josh's answer, this code will deceptively work fine on your single-process testing server, but the moment you deploy it to any sort of multi-processing server, it will give incorrect results. You can't know if you're changing the value in the database without querying the database.
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How to get number of entries in a Lua table?
...nd increase it every time you make an insertion.
count = 0
tbl = {}
tbl["test"] = 47
count = count + 1
tbl[1] = 48
count = count + 1
print(count) -- prints "2"
There's no other way, the # operator will only work on array-like tables with consecutive keys.
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INSTALL_FAILED_NO_MATCHING_ABIS when install apk
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Wish I could upvote more than once... Tested and working on VS 2017 for Mac.
– JordiVilaplana
Apr 26 '18 at 11:23
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Interface naming in Java [closed]
...your interface is now called User. maybe you have a UserProdImpl and a UserTestImpl. if you designed your application well, every class (except the ones that instantiate User) will be unchanged and will not notice that suddenly they get passed an interface.
so it gets clear -> Interface User imp...
How do I forward parameters to other command in bash script?
...nsures that each is seen as a separate word. This explanation along with a test script demonstrating the difference is here: tldp.org/LDP/abs/html/internalvariables.html#APPREF
– Cascabel
Oct 8 '09 at 14:43
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Is there a shortcut to move between header and source file in VC++?
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Excellent, tested and working. Answer posted in Nov 2010 - It still works in July 2012. Perfect!
– rptr
Jul 12 '12 at 17:43
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