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Groovy: what's the purpose of “def” in “def x = 0”?
...able("y")
} catch (groovy.lang.MissingPropertyException e) {
println "error caught"
}
Prints: "error caught"
Using the def keyword in larger programs is important as it helps define the scope in which the variable can be found and can help preserve encapsulation.
If you define a method in ...
Combining node.js and Python
...s the method on the python object
client.invoke("hello", "World", function(error, reply, streaming) {
if(error){
console.log("ERROR: ", error);
}
console.log(reply);
});
Or vice-versa, node.js server:
var zerorpc = require("zerorpc");
var server = new zerorpc.Server({
hel...
How to know if an object has an attribute in Python
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hasattr is exactly the same as using try/except AttributeError: the docstring of hasattr (in Python 2.7) says that it uses getattr hand catches exceptions.
– Jeff Tratner
Apr 27 '12 at 3:04
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How to get just one file from another branch
...t can be a good question to ask here, with specific details like the exact error message, and version of Git and OS used.
– VonC
Jun 5 '14 at 21:23
2
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Remove .php extension with .htaccess
... remove space between [L, space QSA] flags, otherwise 500 Internal Server Error will cause.
– Rahil Wazir
Mar 2 '14 at 17:12
...
Delete all Duplicate Rows except for One in MySQL? [duplicate]
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The subquery in a subquery is necessary for MySQL, or you'll get a 1093 error.
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Simulate delayed and dropped packets on Linux
...empting to use tc qdisc change on an interface with no rules will give the error RTNETLINK answers: No such file or directory.
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How to install CocoaPods?
...ed to install but always failed because of the starting steps. I found one error whereby I can't install gems first. Can anyone give me the steps one by one? How to install or demo.
...
Any good boolean expression simplifiers out there? [closed]
... at 21:12
500 - Internal Server Error500 - Internal Server Error
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Optional Parameters with C++ Macros
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XXX_4(1,2,3,4);
5;
PS: Remove the #define for XXX_0 to get a compile error [ie: if a no-argument option is not allowed].
PPS: Would be nice to have the invalid situations (eg: 5) be something that gives a clearer compilation error to the programmer!
PPPS: I'm not an expert, so I'm very happy...