# example data
DT = data.table(iris)
DT[, Bin := cut(Sepal.Length, c(4,6,8))]
summary is handy for browsing summary statistics. Besides direct usage like summary(DT), it can also be applied per-group conveniently with split:
lapply(split(DT, by=c("Species", "Bin"), drop=TRU...
In molecular biology and genetics, GC-content (or guanine-cytosine content, GC% in short) is the percentage of nitrogenous bases on a DNA molecule that are either guanine or cytosine (from a possibility of four different ones, also including adenine and thymine).
Using BioPython:
>>> from...
The scheduler can be run using the command:
php artisan schedule:run
The scheduler needs to be run every minute in order to work correctly. You can set this up by creating a cron job with the following line, which runs the scheduler every minute in the background.
* * * * * php /path/to/artisan...
Messages can be sent from JavaScript using the following code
window.webkit.messageHandlers.{NAME}.postMessage()
Here how to create a script message handler to handle the messages:
class NotificationScriptMessageHandler: NSObject, WKScriptMessageHandler {
func userContentController(userCon...
function processGoogleDriveFolders() {
var arrayAllFolderNames,continuationToken,folders,foldersFromToken,thisFolder;//Declare variable names
arrayAllFolderNames = [];//Create an empty array and assign it to this variable name
folders = DriveApp.getFolders();//Get all folders from ...
function processGoogleDriveFiles() {
var arrayAllFileNames,continuationToken,files,filesFromToken,fileIterator,thisFile;//Declare variable names
arrayAllFileNames = [];//Create an empty array and assign it to this variable name
files = DriveApp.getFiles();//Get all files from Googl...
function DriveAppAddFolder(child) {//Adds file to the root drive in Google Drive
var body,returnedFolder;//Declare variable names
if (!child) {
body = "There is no folder";
MailApp.sendEmail(Session.getEffectiveUser().getEmail(), "", "Error Adding Folder!&q...
function DriveAppAddFile(child) {//Adds file to the root drive in Google Drive
var body,returnedFolder;//Declare variable names
if (!child) {
body = "There is no file";
MailApp.sendEmail(Session.getEffectiveUser().getEmail(), "", "Error Adding File!",...
Most JVMs have an option to set the maximum heap size e.g.
-Xmx64m
-Xmx8g
In Java 1.0 to 1.2 you could use
-mx64m
and this is still available on some JVMs for backward compatibility (E.g. Oracle JVM).
There are a few common misconceptions about this setting.
It doesn't set the heap size...
This is an example of something that would have been straight up impossible with labels. If you execute the same label multiple times at the same time and they rely on variables that are being defined within them, they very likely interfere and cause unexpected behavior.
Here is how to do it with f...
There are two ways to register a background page in the extension manifest.
The scripts property
In the common case, a background page doesn't require any HTML markup. We can register these kinds of background pages using the scripts property.
In this case, a background page will be generated...
The ASP.NET Core RTM release introduced BundlerMinifier.Core, a new Bundling and Minification tool that can be easily integrated into existing ASP.NET Core applications and doesn't require any external extensions or script files.
Using BundlerMinifier.Core
To use this tool, simply add a reference ...
With ASP.NET Core the Microsoft team also introduced the Options pattern, which allows to have strong typed options and once configured the ability to inject the options into your services.
First we start with a strong typed class, which will hold our configuration.
public class MySettings
{
...
--dataset schemas must be identical
SELECT 'Data1' as 'Column' UNION ALL
SELECT 'Data2' as 'Column' UNION ALL
SELECT 'Data3' as 'Column' UNION ALL
SELECT 'Data4' as 'Column' UNION ALL
SELECT 'Data5' as 'Column'
EXCEPT
SELECT 'Data3' as 'Column'
--Returns Data1, Data2, Data4, and Data5
It can be useful to load a resource (image, text file, properties, KeyStore, ...) that is packaged inside a JAR. For this purpose, we can use the Class and ClassLoaders.
Suppose we have the following project structure :
program.jar
|
\-com
\-project
|
|-file.txt
\-Test.class
...
The Java language provides three operator for performing bitwise shifting on 32 and 64 bit integer values. These are all binary operators with the first operand being the value to be shifted, and the second operand saying how far to shift.
The << or left shift operator shifts the value g...
The way to do a JAX-WS call with basic authentication is a little unobvious.
Here is an example where Service is the service class representation and Port is the service port you want to access.
Service s = new Service();
Port port = s.getPort();
BindingProvider prov = (BindingProvider)port;
...
Let's say you have this line of code:
printf("Hello, world!\n");
Now say you want to change the text to "Program exiting."
CommandBufferMnemonicci"printf("¦");change in the ".Program exiting.\n<esc>printf("Program exiting.\n");
You may sometimes want to change the size of a split or vsplit.
To change the size of the currently active split, use :resize <new size>. :resize 30 for example would make the split 30 lines tall.
To change the size of the currently active vsplit, use :vertical resize <new size>. :vert...
