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What does “not run” mean in R help pages?
...run{} for text that should only be shown, but not run, and \dontshow{} for extra commands for testing that should not be shown to users, but will be run by example()
When you build a package then all code in \dontrun{} closure is visible in help as
## Not run:
...
## End(**Not run**)
edit: Thi...
WebAPI Delete not working - 405 Method Not Allowed
...the name of the parameter in my Delete method.
I had
public void Delete(string Questionid)
instead of
public void Delete(string id)
I need to use the id name because that's the name that is declared in my WebApiConfig file. Note the id name in the third and fourth lines:
config...
How to check whether an array is empty using PHP?
...t empty values before checking (generally done to prevent explodeing weird strings):
foreach ($playerlist as $key => $value) {
if (empty($value)) {
unset($playerlist[$key]);
}
}
if (empty($playerlist)) {
//empty array
}
...
Why are functions in Ocaml/F# not recursive by default?
... function or value of the same name; although I think this is bad practice
Extra safety? Makes sure that you are doing what you intended. e.g. If you don't intend it to be recursive but you accidentally used a name inside the function with the same name as the function itself, it will most likely co...
Get the client IP address using PHP [duplicate]
...
I usually don't like nested ternaries, but I really like it in this case...
– Charles Harmon
Jul 18 '14 at 20:49
...
Is there a benefit to defining a class inside another class in Python?
What I'm talking about here are nested classes. Essentially, I have two classes that I'm modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn't necessarily mean nesting, right?
...
Test if object implements interface
...(object);
}
For example,
java.io.Serializable.class.isInstance("a test string")
evaluates to true.
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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
... always move from its argument. It's supposed to move if the argument is really an rvalue, and copy if it's an lvalue.
The behaviour, you observe, which always moves, is a bug in libstdc++, which is now fixed according to a comment on the question. For those curious, I took a look at the g++-4.8 he...
Reading a huge .csv file
...
You are reading all rows into a list, then processing that list. Don't do that.
Process your rows as you produce them. If you need to filter the data first, use a generator function:
import csv
def getstuff(filename, criterion):
with ...
Is errno thread-safe?
...t errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
...