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NumPy or Pandas: Keeping array type as integer while having a NaN value
...r 'native' column type to be used, operations like subtraction, comparison etc work as expected
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How to create a JavaScript callback for knowing when an image is loaded?
...the nature of the web, right? Things get old or are moved or are modified, etc.
– Jason Bunting
May 24 '17 at 20:35
...
how to POST/Submit an Input Checkbox that is disabled?
...ns Setting value for only-attribute-name attributes like checked, readonly etc... and end slash on non-pair attributes has nothing to do with HTML validity - these are needed for XHTML validity...
– jave.web
Sep 6 '13 at 12:32
...
How to create a .gitignore file
... following into your preferred command line interface (GNU Bash, Git Bash, etc.)
touch .gitignore
As @Wardy pointed out in the comments, touch works on Windows as well as long as you provide the full path. This might also explain why it does not work for some users on Windows: The touch command s...
How to install python3 version of package via pip on Ubuntu?
...
pip-3.3, pip-3.4 etc no longer work. It is now just: pip, pip2, pip3. (At least on Ubuntu 14.04)
– 6005
Feb 13 '15 at 13:19
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How to execute a Python script from the Django shell?
...
I ended up doing sys.path.append(os.getcwd()), it works when I am inside my project directory, my DJANGO_SETTINGS_MODULE is correct and I try to run a script that import models, views, etc.
– Danilo Cabello
Jul 11 '14 at 16...
Java Try Catch Finally blocks without Catch
...g();
try { useResource( r); }
finally { r.release(); } // close, destroy, etc
"Finally", one more tip: if you do bother to put in a catch, either catch specific (expected) throwable subclasses, or just catch "Throwable", not "Exception", for a general catch-all error trap. Too many problems, su...
Does delete on a pointer to a subclass call the base class destructor?
...e to be used) where I did not use it.
auto_ptr, unique_ptr and shared_ptr etc... are great for making this lifetime management much easier:
class A
{
shared_array<char> someHeapMemory;
public:
A() : someHeapMemory(new char[1000]) {}
~A() { } // someHeapMemory is delete[]d automat...
Meaning of = delete after function declaration
...den function to be visibly declared and considered for overload resolution etc., so that it can fail as early as possible and provide the clearest error to the user. Any solution which involves "hiding" the declaration reduces this effect.
– Leushenko
Feb 26 '1...
How can I round a number in JavaScript? .toFixed() returns a string?
... 1e2;
someNumber === 42.01;
// if you need 3 digits, replace 1e2 with 1e3 etc.
// or just copypaste this function to your code:
function toFixedNumber(num, digits, base){
var pow = Math.pow(base||10, digits);
return Math.round(num*pow) / pow;
}
.
Or if you want a “native-like” function,...