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How do I replace NA values with zeros in an R dataframe?
...u post it and not worked. Because this I posted the question. But I tried know and worked perfectly. I think I was doing something wrong.
– Renato Dinhani
Nov 17 '11 at 14:08
12
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Declaring variables inside loops, good practice or bad practice?
... be mitigated using the -Wshadow warning instruction on GCC)
The compiler knows that the variable scope is limited to inside the loop, and therefore will issue a proper error message if the variable is by mistake referenced elsewhere.
Last but not least, some dedicated optimization can be performed ...
F# changes to OCaml [closed]
...
And now the link is dead. I suppose that's probably good. I'm sure F# has been improved since '08.
– user1228
May 4 '12 at 14:36
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ES6 class variable alternatives
...
2018 update:
There is now a stage 3 proposal - I am looking forward to make this answer obsolete in a few months.
In the meantime anyone using TypeScript or babel can use the syntax:
varName = value
Inside a class declaration/expression body and ...
Does setting Java objects to null do anything anymore?
...ue. Basically, because you've preallocated an array, the VM sees that. It knows nothing about the "logical" size of your container. Say you have an ArrayList of size 10, backed by a 16-element array. The VM can't know that items 10..15 aren't actually used; if those slots have contents, they will no...
Targeting both 32bit and 64bit with Visual Studio in same solution/project
..., even on 64-bit machines.
This may be fixed in a future release, but for now (or when using a different tool to create your MSIs that has the same issue), you can use WiX 3.0's managed custom action support to create action DLLs with the proper bitness that will be executed using the corresponding...
Draw radius around a point in Google map
I'm using the Google Maps API and have added markers. Now I want to add a 10 mile radius around each marker, meaning a circle that behaves appropriately while zooming. I have no idea how to do that and it seems it's not something common.
...
Nginx no-www to www and www to no-www
...r_name google.com;
index index.php index.html;
####
# now pull the site from one directory #
root /var/www/www.google.com/web;
# done #
location = /favicon.ico {
log_not_found off;
access_log off;
}
}
...
How does SIGINT relate to the other termination signals such as SIGTERM, SIGQUIT and SIGKILL?
...tions(SHUTDOWN);
message(L_CONSOLE | L_LOG, "The system is going down NOW!");
/* Send signals to every process _except_ pid 1 */
kill(-1, SIGTERM);
message(L_CONSOLE, "Sent SIG%s to all processes", "TERM");
sync();
sleep(1);
kill(-1, SIGKILL);
message(L_CONSOLE, "S...
Default value of function parameter
...uments have to form a contiguous group at the end of the parameter list.
Now, keeping that in mind, in C++ you are allowed to "grow" the set of parameters that have default arguments from one declaration of the function to the next, as long as the above requirements are continuously satisfied.
Fo...