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Understanding Python's “is” operator
...ually wrong! Thanks for pointing that out @martijn-pieters ! I should know by now never to post code without testing it! >>> x=1.0; y=1.0 >>> x is y True >>> x=1.0 >>> y=1.0 >>> x is y False
– Magnus Lyckå
Sep 26 '...
Replace a value if null or undefined in JavaScript
...}
var filter2 = options.filters[1] || ''; // is ''
That can be accessed by index.
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How can I hash a password in Java?
...6 supports PBKDF2, which is a good algorithm to use for password hashing.
byte[] salt = new byte[16];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec("password".toCharArray(), salt, 65536, 128);
SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
byte[] hash = f.generateS...
Joins are for lazy people?
...can do things more efficiently than a straightforward DB join (see comment by meriton). But this is very much the exception.
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Is it possible to stop JavaScript execution? [duplicate]
...oment it was frozen.
Do you want to stop your application arbitrarily and by design?
On error?
Instead of trying to stop everything, let your code handle the error. Read about Exceptions by googling. They are a smart way to let your code "jump" to error handling procedures without using tedious i...
Entity framework self referencing loop detected [duplicate]
...o the object.
Other responses focused in changing the list being returned by excluding data or by making a facade object and sometimes that is not an option.
Using the JsonIgnore attribute to restrict the references can be time consuming and if you want to serialize the tree starting from another ...
Mathematical functions in Swift
...rt UIKit.
import UIKit
You can easily discover your playground platform by opening File Inspector (⌥⌘1).
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Mockito: Stubbing Methods That Return Type With Bounded Wild-Cards
...xcept that I made it slightly more generic, because my error wasn't caused by a java.util.List, but the com.google.common.base.Optional. My little helper method therefore allows for any type T and not just List<T>:
public static <T> Answer<T> createAnswer(final T value) {
Answ...
S3 Static Website Hosting Route All Paths to Index.html
...ith the deployment strategy. Writing a small js to redirect is kind of shabby approach. Also, the number of redirects is a problem too. I am trying to figure if there is a way for all S3 urls to point to index.html always.
– moha297
Feb 12 '16 at 3:24
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Difference between matches() and find() in Java Regex
...calling .find() more than once may have different results if not preceeded by reset(), while matches() will always return same result. See my answer below.
– L. Holanda
Nov 20 '15 at 22:35
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