In MongoDB, projection means selecting only the necessary data rather than selecting whole of the data of a document.
The basic syntax of find() method with projection is as follows
> db.COLLECTION_NAME.find({},{KEY:1});
If you want to to show all document without the age field then the comm...
ArgumentCaptor will to receive the actual invocation arguments that has been passed to method.
ArgumentCaptor<Foo> captor = ArgumentCaptor.forClass(Foo.class);
verify(mockObj).doSomethind(captor.capture());
Foo invocationArg = captor.getValue();
//do any assertions on invocationArg
For ...
The org.bukkit.event.EventHandler annotation accepts a couple parameters.
priority - Indicates the priority of your listener. There are the six different priorities, in order of execution: LOWEST,LOW,NORMAL[default],HIGH,HIGHEST,MONITOR. These constants refer to the org.bukkit.event.EventPriority e...
Using scanf
Scanf scans text read from standard input, storing successive space-separated values into successive arguments as determined by the format. It returns the number of items successfully scanned. If that is less than the number of arguments, err will report why. Newlines in the input mus...
In order to install asyncio:
pip install asyncio
Notice that python asyncio requires Python 3.3 or later.
This module became part of the Python standard library since Python 3.4.
# General syntax:
# grep(<pattern>, <character vector>)
mystring <- c('The number 5',
'The number 8',
'1 is the loneliest number',
'Company, 3 is',
'Git SSH tag is [email protected]',
'My personal site is w...
In this example 2000 bytes will be transfered using DMA, Transmit Half Complete and Transmit Complete interrupts achieving the best performance.
The first half of the transmit buffer is loaded with new data by the CPU in the Transmit Half Complete interrupt callback while the second half of the buf...
Tkinter support .ppm files from PIL(Python Imaging Library), .JPG, .PNG and .GIF.
To import and image you first need to create a reference like so:
Image = PhotoImage(filename = [Your Image here])
Now, we can add this image to Button and Labels like so using the "img" callback:
Lbl ...
In an angular app everything goes around scope, if we could get an elements scope then it is easy to debug the angular app.
How to access the scope of element:
angular.element(myDomElement).scope();
e.g.
angular.element(document.getElementById('yourElementId')).scope() //accessing by ID
Gett...
One of several applications of bit manipulation is converting a letter from small to capital or vice versa by choosing a mask and a proper bit operation. For example, the a letter has this binary representation 01(1)00001 while its capital counterpart has 01(0)00001. They differ solely in the bit in...
Create a file called hello.html with the following content:
<!doctype html>
<html>
<head>
<script src="//cdnjs.cloudflare.com/ajax/libs/dygraph/2.0.0/dygraph.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com...
