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What exactly is Python multiprocessing Module's .join() Method Doing?
...mon across many programming languages, so Python just adopted it as well.
Now, the reason you see the 20 second delay both with and without the call to join() is because by default, when the main process is ready to exit, it will implicitly call join() on all running multiprocessing.Process instanc...
In a bootstrap responsive page how to center a div
...
Update for Bootstrap 4
Now that Bootstrap 4 is flexbox, vertical alignment is easier. Given a full height flexbox div, just us my-auto for even top and bottom margins...
<div class="container h-100 d-flex justify-content-center">
<div...
Retain precision with double in Java
...he BigDecimal class, if you want to have an exact representation of 11.4.
Now, a little explanation into why this is happening:
The float and double primitive types in Java are floating point numbers, where the number is stored as a binary representation of a fraction and a exponent.
More specifi...
For each row return the column name of the largest value
I have a roster of employees, and I need to know at what department they are in most often. It is trivial to tabulate employee ID against department name, but it is trickier to return the department name, rather than the number of roster counts, from the frequency table. A simple example below (colu...
Showing data values on stacked bar chart in ggplot2
...ack(vjust = 0.5))
Also note that "position_stack() and position_fill() now stack values in the reverse order of the grouping, which makes the default stack order match the legend."
Answer valid for older versions of ggplot:
Here is one approach, which calculates the midpoints of the bars.
l...
Including another class in SCSS
...ommon
properties
Extend your class (.my-base-class) with this placeholder.
Now you can extend %base-class in any of your classes (e.g. .my-class).
%base-class {
width: 80%;
margin-left: 10%;
margin-right: 10%;
}
.my-base-class {
@extend %base-class;
}
.my-class {
@extend %base-cl...
HashMap get/put complexity
...mplementations, which ought to be good.
On top of that, what you may not know (again, this is based in reading source - it's not guaranteed) is that HashMap stirs the hash before using it, to mix entropy from throughout the word into the bottom bits, which is where it's needed for all but the huges...
Mocking member variables of a class using Mockito
... particular .
I guess my requirement is pretty simple, but I am keen to know others thoughts on this.
8 Answers
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Django ModelForm: What is save(commit=False) used for?
...er = self.request.user
attachment.date_attached = timezone.now()
attachment.competency = competency
attachment.filename = request.FILES['attachment'].name
if attachment.filename.lower().endswith(('.png','jpg','jpeg','.ai','.bmp','.gif',...
How do you create a dropdownlist from an enum in ASP.NET MVC?
...
I know I'm late to the party on this, but thought you might find this variant useful, as this one also allows you to use descriptive strings rather than enumeration constants in the drop down. To do this, decorate each enumerati...