Tutorial by Examples: re

There have been many releases of Java since the original Java 1.0 release in 1995. (Refer to Java version history for a summary.) However most releases have passed their official End Of Life dates. This means that the vendor (typically Oracle now) has ceased new development for the release, and n...

One method for creating recursive lambda functions involves assigning the function to a variable and then referencing that variable within the function itself. A common example of this is the recursive calculation of the factorial of a number - such as shown in the following code: lambda_factorial ...

Java release naming is a little confusing. There are actually two systems of naming and numbering, as shown in this table: JDK versionMarketing namejdk-1.0JDK 1.0jdk-1.1JDK 1.1jdk-1.2J2SE 1.2......jdk-1.5J2SE 1.5 rebranded Java SE 5jdk-1.6Java SE 6jdk-1.7Java SE 7jdk-1.8Java SE 8jdk-91Java SE 9 (n...

public string GetCustomerNamesCsv() { List<CustomerData> customerDataRecords = GetCustomerData(); // Returns a large number of records, say, 10000+ StringBuilder customerNamesCsv = new StringBuilder(); foreach (CustomerData record in customerDataRecords) { custom...

In most cases all data that is accessed by several threads should be initialized before the threads are created. This ensures that all threads start with a clear state and no race condition occurs. If this is not possible once_flag and call_once can be used #include <threads.h> #include &lt...

Sometimes for organizational or other reasons it makes sense to have your top level resource return a sub-resource that would look like this. (Your sub-resource does not need to be an inner class) import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; @Path("items&q...

It is possible to retarget an event in Polymer ie you can change event details like path thus hiding the actual details of an event/element from user. For e.g if a div inside event-retargeting element is firing the event but developer does not want the user to know that he can retarget the event to...

Almost any MPI call returns an integer error code, which signifies the success of the operation. If no error occurs, the return code is MPI_SUCCESS: if (MPI_Some_op(...) != MPI_SUCCESS) { // Process error } If an error occurs, MPI calls an error handler associated with the communicator, ...

get-childitem | foreach-object { if ($_.IsReadOnly) { return } } Pipeline cmdlets (ex: ForEach-Object, Where-Object, etc) operate on closures. The return here will only move to the next item on the pipeline, not exit processing. You can use break instead of return if you want to exit processing...

(paraphrased from about_return) The following methods will have the same values on the pipeline function foo { $a = "Hello" return $a } function bar { $a = "Hello" $a return } function quux { $a = "Hello" $a }

To create a redistributable package (e.g. a ZIP archive or setup program), it's usually enough to simply invoke CPack using a syntax very similar to calling CMake: cpack path/to/build/directory Depending on the environment this will gather all required/installed files for the project and put the...

First of all you need Uri and temp Folders and request codes : public final int REQUEST_SELECT_PICTURE = 0x01; public final int REQUEST_CODE_TAKE_PICTURE = 0x2; public static String TEMP_PHOTO_FILE_NAME ="photo_"; Uri mImageCaptureUri; File mFileTemp; Then init mFileTemp : public ...

Enums contains only constants and can be compared directly with ==. So, only reference check is needed, no need to use .equals method. Moreover, if .equals used incorrectly, may raise the NullPointerException while that's not the case with == check. enum Day { GOOD, AVERAGE, WORST; } publi...

The Standard (10.4) states: Member functions can be called from a constructor (or destructor) of an abstract class; the effect of making a virtual call (10.3) to a pure virtual function directly or indirectly for the object being created (or destroyed) from such a constructor (or destructor) is u...

LINQ provides a built-in function for checking the equality of two IEnumerables, and that function can be used on arrays. The SequenceEqual function will return true if the arrays have the same length and the values in corresponding indices are equal, and false otherwise. int[] arr1 = { 3, 5, 7 };...

ssh -p 21 [email protected] <<EOF echo 'printing pwd' echo "\$(pwd)" ls -a find '*.txt' EOF $ is escaped because we do not want it to be expanded by the current shell i.e $(pwd) is to be executed on the remote shell. Another way: ssh -p 21 [email protected] <...

Inside your layout, add a Login button with the following code: <com.twitter.sdk.android.core.identity.TwitterLoginButton android:id="@+id/twitter_login_button" android:layout_width="wrap_content" android:layout_height="wrap_content" and...

The class use Phalcon\Validation\Validator; use Phalcon\Validation\ValidatorInterface; use Phalcon\Validation\Message; class RecaptchaValidator extends Validator implements ValidatorInterface { public function validate(\Phalcon\Validation $validation, $attribute) { $value =...

Things you need A paid Apple Developer Program Membership A valid App ID and identifier for you app (like com.example.MyApp) which is not used before anywhere Access to developer.apple.com and Member Center An iOS Device to test (as Push Notifications don't work on Simulator) Enabling t...

Registers: 8 bit: A, B, C, D, E, H, L, F, I, R, 16 bit: SP, PC, IX, IY, and shadows of some 8b registers: A', B', C', D', E', H', L' and F'. Most of the 8 bit registers can be used also in pairs as 16 bit registers: AF, BC, DE and HL. SP is stack pointer, marking the bottom of stack memory (used b...