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nodeJs callbacks simple example
...xample of using both functions.
Synchronous:
var data = fs.readFileSync('test.txt');
console.log(data);
The code above blocks thread execution until all the contents of test.txt are read into memory and stored in the variable data. In node this is typically considered bad practice. There are tim...
Coding Katas for practicing the refactoring of legacy code
...hniques in Working Effectively with Legacy Code to get a piece of it under test
Refactor that piece, perhaps fixing bugs and adding features along the way
Repeat steps 4 through 6
When you find a part that was especially challenging, throw away your work and repeat it a couple times to reinforce y...
Node.js + Nginx - What now?
..., "127.0.0.1");
console.log('Server running at http://127.0.0.1:3000/');
Test for syntax mistakes:
nginx -t
Restart nginx:
sudo /etc/init.d/nginx restart
Lastly start the node server:
cd /var/www/yourdomain/ && node app.js
Now you should see "Hello World" at yourdomain.com
One la...
When tracing out variables in the console, How to create a new line?
... quote marks ". They also preserve new line and tab
const roleName = 'test1';
const role_ID = 'test2';
const modal_ID = 'test3';
const related = 'test4';
console.log(`
roleName = ${roleName}
role_ID = ${role_ID}
modal_ID = ${modal_ID}
related = ${related}
`);
...
Why C# implements methods as non-virtual by default?
... the effort needed for good overall design (good content, clear use cases, testing, documentation), designing for inheritance really isn't too bad. And if you're not publishing, virtual-by-default is less time-consuming, and you can always fix the small portion of cases where it's problematic.
...
Spring MVC: Complex object as GET @RequestParam
...
data class SearchDTO(var id: Array<Long> = arrayOf())
the Spring (tested in Boot) returns the following error for request mentioned in answer:
"Failed to convert value of type 'java.lang.String[]' to required type
'java.lang.Long[]'; nested exception is
java.lang.NumberFormatExcepti...
Why do we need Abstract factory design pattern?
...Abstract factory pattern on top of IoC?
Is this the correct way to use and test a class that makes use of the factory pattern?
DDD Book, Eric Evans: Please explain what is meant by "The FACTORY should be abstracted to the type desired rather than the concrete class(es) created."
DI container, factor...
LEN function not including trailing spaces in SQL Server
I have the following test table in SQL Server 2005:
10 Answers
10
...
Calling Objective-C method from C++ member function?
...responding header file.
// Header file (We call it "ObjCFunc.h")
#ifndef test2_ObjCFunc_h
#define test2_ObjCFunc_h
@interface myClass :NSObject
-(void)hello:(int)num1;
@end
#endif
// Corresponding Objective C file(We call it "ObjCFunc.m")
#import <Foundation/Foundation.h>
#include "ObjCFu...
In mongoDb, how do you remove an array element by its index?
...his is how I do it.
exports.deletePregunta = function (req, res) {
let codTest = req.params.tCodigo;
let indexPregunta = req.body.pregunta; // the index that come from frontend
let inPregunta = `tPreguntas.0.pregunta.${indexPregunta}`; // my field in my db
let inOpciones = `tPreguntas.0.opciones.${...