You can add a jar in Eclipse by right-clicking on the Project → Build Path → Configure Build Path. Under Libraries tab, click Add Jars or Add External JARs and give the Jar. A quick demo here. The above solution is obviously a “Quick” one. However, if you are working on a project where you … Read more
It’s not a matter of security. The HTTP protocol defines GET-type requests as being idempotent, while POSTs may have side effects. In plain English, that means that GET is used for viewing something, without changing it, while POST is used for changing something. For example, a search page should use GET, while a form that … Read more
Handling CORS requests properly is a tad more involved. Here is a function that will respond more fully (and properly). /** * An example CORS-compliant method. It will allow any GET, POST, or OPTIONS requests from any * origin. * * In a production environment, you probably want to be more restrictive, but this gives … Read more
Simple solution for HTML5 ready browsers… function download(filename, text) { var pom = document.createElement(‘a’); pom.setAttribute(‘href’, ‘data:text/plain;charset=utf-8,’ + encodeURIComponent(text)); pom.setAttribute(‘download’, filename); if (document.createEvent) { var event = document.createEvent(‘MouseEvents’); event.initEvent(‘click’, true, true); pom.dispatchEvent(event); } else { pom.click(); } } Usage download(‘test.txt’, ‘Hello world!’);
Instead of injecting ElementRef and using querySelector or similar from there, a declarative way can be used instead to access elements in the view directly: <input #myname> @ViewChild(‘myname’) input; element ngAfterViewInit() { console.log(this.input.nativeElement.value); } StackBlitz example @ViewChild() supports directive or component type as parameter, or the name (string) of a template variable. @ViewChildren() also supports … Read more
The class declaration should be in the header file (Or in the source file if not shared). File: foo.h class foo { private: static int i; }; But the initialization should be in source file. File: foo.cpp int foo::i = 0; If the initialization is in the header file then each file that includes the … Read more
After playing around with a few things, I managed to figure this out myself. First of all, this will convert a dataURI to a Blob: function dataURItoBlob(dataURI) { // convert base64/URLEncoded data component to raw binary data held in a string var byteString; if (dataURI.split(‘,’)[0].indexOf(‘base64’) >= 0) byteString = atob(dataURI.split(‘,’)[1]); else byteString = unescape(dataURI.split(‘,’)[1]); // … Read more
Java 8 (2014) solves this problem using streams and lambdas in one line of code: List<Person> beerDrinkers = persons.stream() .filter(p -> p.getAge() > 16).collect(Collectors.toList()); Here’s a tutorial. Use Collection#removeIf to modify the collection in place. (Notice: In this case, the predicate will remove objects who satisfy the predicate): persons.removeIf(p -> p.getAge() <= 16); lambdaj allows … Read more
See it in Activity Lifecycle (at Android Developers). onCreate(): Called when the activity is first created. This is where you should do all of your normal static set up: create views, bind data to lists, etc. This method also provides you with a Bundle containing the activity’s previously frozen state, if there was one. Always … Read more
is there a variant of pool.map which support multiple arguments? Python 3.3 includes pool.starmap() method: #!/usr/bin/env python3 from functools import partial from itertools import repeat from multiprocessing import Pool, freeze_support def func(a, b): return a + b def main(): a_args = [1,2,3] second_arg = 1 with Pool() as pool: L = pool.starmap(func, [(1, 1), (2, … Read more