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Return from lambda forEach() in java
I am trying to change some for-each loops to lambda forEach() -methods to discover the possibilities of lambda expressions. The following seems to be possible:
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Logic to test that 3 of 4 are True
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I suggest writing the code in a manner that indicates what you mean. If you want 3 values to be true, it seems natural to me that the value 3 appears somewhere.
For instance, in C++:
if ((int)a + (int)b + (int)c + (int)d == 3)
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This is well defin...
Is the order of elements in a JSON list preserved?
I've noticed the order of elements in a JSON object not being the original order.
5 Answers
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New Array from Index Range Swift
How can I do something like this? Take the first n elements from an array:
5 Answers
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Replace a value if null or undefined in JavaScript
I have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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How can I hash a password in Java?
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You can actually use a facility built in to the Java runtime to do this. The SunJCE 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, 65...
What makes a SQL statement sargable?
By definition (at least from what I've seen) sargable means that a query is capable of having the query engine optimize the execution plan that the query uses. I've tried looking up the answers, but there doesn't seem to be a lot on the subject matter. So the question is, what does or doesn't make...
Mockito: Stubbing Methods That Return Type With Bounded Wild-Cards
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You can also use the non-type safe method doReturn for this purpose,
@Test
public void testMockitoWithGenerics()
{
DummyClass dummyClass = Mockito.mock(DummyClass.class);
List<? extends Number> someList = new ArrayList<Integer>();
Moc...
Using ping in c#
When I Ping a remote system with windows it says there is no reply, but when I ping with c# it says success. Windows is correct, the device is not connected. Why is my code able to successfully ping when Windows is not?
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Get event listeners attached to node using addEventListener
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Chrome DevTools, Safari Inspector and Firebug support getEventListeners(node).
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