Tutorial by Examples: d

Player playerToHide; Player playerToNotSee; playerToNotSee.hide(playerToHide); //playerToHide will no longer be seen by playerToNotSee. If player is already hidden, nothing happens

This can be done by using the event EntityTargetEvent Entities won't target the player if you cancel the event: @EventHandler public void onEntityTarget(EntityTargetEvent e) { Entity target = e.getEntity(); if(target instanceof Player) { Player playerTargetted = (Player) target...

Type declaration: CREATE OR REPLACE TYPE mid_type UNDER base_type ( mid_attr DATE, CONSTRUCTOR FUNCTION mid_type ( i_base_id INTEGER, i_base_attr VARCHAR2, i_mid_attr DATE ) RETURN SELF AS RESULT, MEMBER FUNCTION get_mid_attr RETURN DATE, MEMBER PROC...

CREATE SEQUENCE test_seq START WITH 1001; CREATE TABLE test_tab ( test_id INTEGER, test_obj base_type, PRIMARY KEY (test_id) ); INSERT INTO test_tab (test_id, test_obj) VALUES (test_seq.nextval, base_type(1,'BASE_TYPE')); INSERT INTO test_tab (test_id, test_obj) VALUES (test_...

This example shows how to populate report with data returned by a data view delegate. During the exercise, we will develop an inquiry screen showing list of Sales Orders between two dates. Data view delegate will be used to populate Sales Order information. Prerequisites: We start with declara...

There are times with multiple static objects where you need to be able to guarantee that the singleton will not be destroyed until all the static objects that use the singleton no longer need it. In this case std::shared_ptr can be used to keep the singleton alive for all users even when the static...

You can also make a switch statement switch based on the class of the thing you're switching on. An example where this is useful is in prepareForSegue. I used to switch based on the segue identifier, but that's fragile. if you change your storyboard later and rename the segue identifier, it breaks ...

If a function returns a std::vector type, and it is exposed to Python directly like std::vector<float> secondMethod() { return std::vector<float>(); } BOOST_PYTHON_MODULE(CppProject) { boost::python::def("getEmptyVec", secondMethod); } then when the functions...

You can wait until the next frame. yield return null; // wait until sometime in the next frame You can have multiple of these calls in a row, to simply wait for as many frames as desired. //wait for a few frames yield return null; yield return null; Wait for approximately n seconds. It is ...

import argparse import sys def check(): print("status") return 0 parser = argparse.ArgumentParser(prog="sub", add_help=False) subparser = parser.add_subparsers(dest="cmd") subparser.add_parser('status', help='show status') subparser.add_parser('lis...

Dynamically switch beetween multiple components using <component> element and pass data to v-bind:is attribute: Javascript: new Vue({ el: '#app', data: { currentPage: 'home' }, components: { home: { template: "<p>Home</p>" }, about...

const process = require('process'); const rl = require('readline').createInterface(process.stdin, process.stdout); rl.pause(); console.log('Something long is happening here...'); var cliConfig = { promptPrefix: ' > ' } /* Commands recognition BEGIN */ var commands = {...

Avoid calling methods using strings that can accept methods. This approach will make use of reflection that can slow down your game especially when used in the update function. Examples: //Avoid StartCoroutine with method name this.StartCoroutine("SampleCoroutine"); //Ins...

Avoid empty unity methods. Apart from being bad programming style, there is a very small overhead involved in runtime scripting. Over many instances, this can build up and affect performance. void Update { } void FixedUpdate { }

This is a bare minimum setup for MySQL servers using InnoDB tables. Using InnoDB, query cache is not required. Reclaim disk space when a table or database is DROPed. If you're using SSDs, flushing is a redundant operation (SDDs are not sequential). default_storage_engine = InnoDB query_cache_type ...

Event fired when player enters a bed: PlayerBedEnterEvent PlayerBedEnterEvent(Player who, Block bed) @EventHandler public void onPlayerBedEnter(PlayerBedEnterEvent e) { Player entered = e.getPlayer(); Block bedEntered = e.getBed(); } Event fired when player leaves a bed: P...

PS> $LastExitCode PS> $? PS> $Error[0] These are built-in PowerShell variables that provide additional information about the most recent error. $LastExitCode is the final exit code of the last native application that was executed. $? and $Error[0] is the last error record that was gene...

Many of us start debugging with simple print(). Let's say we have such a class: class Abc { let a = "aa" let b = "bb" } and we have an instance of Abc as so: let abc = Abc() When we run the print() on the variable, the output is App.Abc while dump() output...

To add a resource to the cache you must provide a key and the resource. First make sure that the value is not in the cache already public void addResourceToMemoryCache(String key, Bitmap resource) { if (memoryCache.get(key) == null) memoryCache.put(key, resource); }

Step 1: Create an empty project via File -> New Project. Step 2: Right click the project solution and select Build Dependencies->Build Customizations. Step 3: Check the checkbox ".masm". Step 4: Press the button "ok". Step 5: Create your assembly file and type in th...