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How do I use Ruby for shell scripting?
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148
By default, you already have access to Dir and File, which are pretty useful by themselves.
Di...
How to create a GUID/UUID using iOS
...tring = CFUUIDCreateString(NULL, theUUID);
CFRelease(theUUID);
return (__bridge NSString *)string;
}
EDIT: Jan, 29 2014:
If you're targeting iOS 6 or later, you can now use the much simpler method:
NSString *UUID = [[NSUUID UUID] UUIDString];
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Can't import my own modules in Python
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answered Feb 21 '12 at 18:46
David RobinsonDavid Robinson
68.3k1212 gold badges146146 silver badges171171 bronze badges
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Java regex email
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Gaurav Jeswani
2,35744 gold badges2020 silver badges3333 bronze badges
answered Nov 20 '11 at 21:04
Jason BuberelJason Bu...
Reading a key from the Web.Config using ConfigurationManager
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483
Try using the WebConfigurationManager class instead. For example:
string userName = WebConfig...
Are there any standard exit status codes in Linux?
...int status;
pid_t child = fork();
if (child <= 0)
exit(42);
waitpid(child, &status, 0);
if (WIFEXITED(status))
printf("first child exited with %u\n", WEXITSTATUS(status));
/* prints: "first child exited with 42" */
child = fork();
if (child <= ...
How to model type-safe enum types?
... val Mon, Tue, Wed, Thu, Fri, Sat, Sun = Value
}
import WeekDay._
def isWorkingDay(d: WeekDay) = ! (d == Sat || d == Sun)
WeekDay.values filter isWorkingDay foreach println
}
share
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How to check if object (variable) is defined in R?
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460
You want exists():
R> exists("somethingUnknown")
[1] FALSE
R> somethingUnknown <- 42...
IntelliJ IDEA JDK configuration on Mac OS
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4 Answers
4
Active
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How do I associate a Vagrant project directory with an existing VirtualBox VM?
...his if a single VM exists:
{
"active":{
"default":"02f8b71c-75c6-4f33-a161-0f46a0665ab6"
}
}
default is the name of the default virtual machine (if you're not using multi-VM setups).
If your VM has somehow become disassociated, what you can do is do VBoxManage list vms which will li...