Tutorial by Examples: v

library(gpuR) # vclMatrix objects X <- vclMatrix(rnorm(100), 10, 10) Y <- vclMatrix(rnorm(100), 10, 10) # data always on GPU # no data transfer Z <- X %*% Y

From MSDN Use the CInt function to provide conversions from any other data type to an Integer subtype. For example, CInt forces integer arithmetic when currency, single-precision, or double-precision arithmetic would normally occur. Assuming that you have 1 button and 2 textbox. If you type...

TRACE and DEBUG log levels are there to be able to convey high detail about the operation of the given code at runtime. Setting the log level above these is usually recommended, however some care must be taken for these statements to not affect performance even when seemingly "turned off"....

This example will call the windows calculator. It's important to notice that the exit code will vary accordingly to the program/script that is being called. package process.example; import java.io.IOException; public class App { public static void main(String[] args) { try { ...

In general when making a call to the command line, the program will send the command and then continue its execution. However you may want to wait for the called program to finish before continuing your own execution (ex. The called program will write data to a file and your program needs that to a...

Launching external processes from Java using the raw java.lang.ProcessBuilder API directly can be a little cumbersome. The Apache Commons Exec library makes it a little easier. The ch.vorburger.exec library further extends upon Commons Exec to make it truly convenient: ManagedProcess proc = new ...

This proxy simply appends the string " went through proxy" to every string property set on the target object. let object = {}; let handler = { set(target, prop, value){ // Note that ES6 object syntax is used if('string' === typeof value){ target[prop] = valu...

Laravel's events allows to implement the Observer pattern. This can be used to send a welcome email to a user whenever they register on your application. New events and listeners can be generated using the artisan command line utility after registering the event and their particular listener in App...

Notice, this is only for angular-cli up to 1.0.0-beta.10 version ! Some libraries or plugins may not have typings. Without these, TypeScript can't type check them and therefore causes compilation errors. These libraries can still be used but differently than imported modules. Include a scr...

Though the transaction class method is called on some ActiveRecord class, the objects within the transaction block need not all be instances of that class. This is because transactions are per-database connection, not per-model. In this example a balance record is transactionally saved even though ...

Both #save and #destroy come wrapped in a transaction that ensures that whatever you do in validations or callbacks will happen under its protected cover. So you can use validations to check for values that the transaction depends on or you can raise exceptions in the callbacks to rollback, includin...

Create a file named launch-server.yaml, that will be our playbook. The first part of the playbook is a list of hosts that your playbook will run on, we only have one, localhost. - hosts: localhost Then we need to define a list of tasks to perform in this playbook. We will only have one that lau...

infixl vs infixr vs infix describe on which sides the parens will be grouped. For example, consider the following fixity declarations (in base) infixl 6 - infixr 5 : infix 4 == The infixl tells us that - has left associativity, which means that 1 - 2 - 3 - 4 gets parsed as ((1 - 2) - 3) - 4 ...

To print a test field (TestField) from a test feature class (TestFC) in a test file geodatabase (Test.gdb) located in a temporary folder (C:\Temp): with arcpy.da.SearchCursor(r"C:\Temp\Test.gdb\TestFC",["TestField"]) as cursor: for row in cursor: print row[0]

long fib(long n) { return n < 2 ? n : fib(n - 1) + fib(n - 2); } struct FibStruct(int n) { // Remarks: n is a template ubyte[fib(n)] data; } void main() { import std.stdio : writeln; enum f10 = fib(10); // execute the function at compile-time pragma(msg, f10); /...

If an arithmetic operation that yields a floating point type produces a value that is not in the range of representable values of the result type, the behavior is undefined according to the C++ standard, but may be defined by other standards the machine might conform to, such as IEEE 754. float x =...

When either a signed or unsigned integer is converted to a signed integer type, and its value is not representable in the destination type, the value produced is implementation-defined. Example: // Suppose that on this implementation, the range of signed char is -128 to +127 and // the range of un...

Here is a simple JsonArray which you would like to convert to a Java ArrayList: { "list": [ "Test_String_1", "Test_String_2" ] } Now pass the JsonArray 'list' to the following method which returns a corresponding...

Sometimes in a development or testing environment, the SSL certificate chain might not have been fully established (yet). To continue developing and testing, you can turn off SSL verification programmatically by installing an "all-trusting" trust manager: try { // Create a trust mana...

Config values can be set in three ways: Via private static variables on any class within a SilverStripe project Via yaml config files (stored in module-folder/_config/[file].yml) Via PHP at run time (Config::inst()->update('Director', 'environment_type', 'dev') Generally it's best to se...