To change the default stack order positioned elements (position property set to relative, absolute or fixed), use the z-index property.
The higher the z-index, the higher up in the stacking context (on the z-axis) it is placed.
Example
In the example below, a z-index value of 3 puts green on to...
If you are using the default bash prompt on Linux, you should see the name of the virtual environment at the start of your prompt.
(my-project-env) user@hostname:~$ which python
/home/user/my-project-env/bin/python
Create a ModelForm from an existing Model class, by subclassing ModelForm:
from django import forms
class OrderForm(forms.ModelForm):
class Meta:
model = Order
fields = ['item', 'order_date', 'customer', 'status']
The special variable __name__ is not set by the user. It is mostly used to check whether or not the module is being run by itself or run because an import was performed. To avoid your module to run certain parts of its code when it gets imported, check if __name__ == '__main__'.
Let module_1.py be ...
The jQuery UI framework helps to extend and increase the User Interface controls for jQuery JavaScript library.
When you wish to use jQuery UI, you will need to add these libraries to your HTML. A quick way to start is using the Content Delivery Network available code sources:
jQuery Libraries
ht...
The simple answer is that it allows you to evolve an existing interface without breaking existing implementations.
For example, you have Swim interface that you published 20 years ago.
public interface Swim {
void backStroke();
}
We did a great job, our interface is very popular, there ar...
This type of tests make sure that your code compiles properly and will appear in the generated documentation for your project. In addition to that, the example tests can assert that your test produces proper output.
sum.go:
package sum
// Sum calculates the sum of two integers
func Sum(a, b in...
This technique works even when the container's dimensions are unknown.
Set up a "ghost" element inside the container to be centered that is 100% height, then use vertical-align: middle on both that and the element to be centered.
CSS
/* This parent can be any width and height */
.block...
function sayHello(name)
print("Hello, " .. name .. "!")
end
That function is a simple function, and it works well. But what would happen if we just called sayHello()?
stdin:2: attempt to concatenate local 'name' (a nil value)
stack traceback:
stdin:2: in function ...
Instance methods are functions that belong to instances of a type in Swift (a class, struct, enumeration, or protocol). Type methods are called on a type itself.
Instance Methods
Instance methods are defined with a func declaration inside the definition of the type, or in an extension.
class Coun...
function output = mymult(a, b)
% MYMULT Multiply two numbers.
% output = MYMULT(a, b) multiplies a and b.
%
% See also fft, foo, sin.
%
% For more information, see <a href="matlab:web('https://google.com')">Google</a>.
output = a * b;
end
help mymult then p...
Implementations in classes, including abstract declarations, take precedence over all interface defaults.
Abstract class method takes precedence over Interface Default Method.
public interface Swim {
default void backStroke() {
System.out.println("Swim.backStroke");
...
The expansion of a macro often needs to use symbols that weren't passed as arguments by the user (as names for local variables, for example). One must make sure that such symbols cannot conflict with a symbol that the user is using in the surrounding code.
This is usually achieved by using GENSYM, ...
Agents can be added to a JVM at runtime. To load an agent you will need to use the Attach API's VirtualMachine.attatch(String id). You can then load a compiled agent jar with the following method:
public static void loadAgent(String agentPath) {
String vmName = ManagementFactory.getRuntimeMXBe...
When contributors add to a project from different machines or operating systems, it may happen that they use different email addresses or names for this, which will fragment contributor lists and statistics.
Running git shortlog -sn to get a list of contributors and the number of commits by them co...
