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Is it fine to have foreign key as primary key?
...n to this are tables with a one-to-one relationship, where the foreign key and primary key of the linked table are one and the same.
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How do I loop through or enumerate a JavaScript object?
...have to make sure that the key you get is an actual property of an object, and doesn't come from the prototype.
Here is the snippet:
var p = {
"p1": "value1",
"p2": "value2",
"p3": "value3"
};
for (var key in p) {
if (p.hasOwnProperty(key)) {
console.log(key + "...
UIView's frame, bounds, center, origin, when to use what?
UIView has the properties frame , bounds , center , and origin , and they all seem to be interrelated. Most of the time, I deal with frame when setting the position and size of a UIView . I understand that frame is using global coordinate system and bounds is using coordinate of the lo...
Meaning of “[: too many arguments” error from if [] (square brackets)
...t find any one simple straightforward resource spelling out the meaning of and fix for the following BASH shell error, so I'm posting what I found after researching it.
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How to increase the gap between text and underlining in CSS
...erline applied, is it possible to increase the distance between the text and the underline?
15 Answers
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How do you run your own code alongside Tkinter's event loop?
My little brother is just getting into programming, and for his Science Fair project, he's doing a simulation of a flock of birds in the sky. He's gotten most of his code written, and it works nicely, but the birds need to move every moment .
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How do I use reflection to call a generic method?
...rs public instance methods by default, so you may need BindingFlags.Static and/or BindingFlags.NonPublic.
– user565869
Dec 16 '11 at 22:32
20
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Can I multiply strings in Java to repeat sequences? [duplicate]
...tion]).replace("\0", "-")
Replace generation with number of repetitions, and the "-" with the string (or char) you want repeated.
All this does is create an empty string containing n number of 0x00 characters, and the built-in String#replace method does the rest.
Here's a sample to copy and past...
How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
...FYI, the terribly troublesome old date-time classes such as java.util.Date and java.sql.Timestamp are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
Dec 24 '18 at 20:01
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How do I iterate over the words of a string?
...re's another way to extract tokens from an input string, relying only on standard library facilities. It's an example of the power and elegance behind the design of the STL.
#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator&g...