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Why is it important to override GetHashCode when Equals method is overridden?
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Yes, it is important if your item will be used as a key in a dictionary, or HashSet<T>, etc - since this is used (in the absence of a custom IEqualityComparer<T>) to group items into buckets. If the hash-code for two i...
How to clear an ImageView in Android?
... ImageView s for my displays, but at some point I don't have values to put it.
17 Answers
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urlencode vs rawurlencode?
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It will depend on your purpose. If interoperability with other systems is important then it seems rawurlencode is the way to go. The one exception is legacy systems which expect the query string to follow form-encoding style ...
.prop() vs .attr()
...1 changed things slightly: in the face of the predicted pile of broken websites, the jQuery team reverted attr() to something close to (but not exactly the same as) its old behaviour for Boolean attributes. John Resig also blogged about it. I can see the difficulty they were in but still disagree wi...
What is the main difference between PATCH and PUT request?
... PATCH method requests that a set of changes described in the
request entity be applied to the resource identified by the Request-
URI. The set of changes is represented in a format called a "patch
document" identified by a media type. If the Request-URI does not
point to an existing resour...
What does 'var that = this;' mean in JavaScript?
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I'm going to begin this answer with an illustration:
var colours = ['red', 'green', 'blue'];
document.getElementById('element').addEventListener('click', function() {
// this is a reference to the element clicked on
var that = this;
colours.f...
What is the “volatile” keyword used for?
...read some articles about the volatile keyword but I could not figure out its correct usage. Could you please tell me what it should be used for in C# and in Java?
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Git Extensions: Win32 error 487: Couldn't reserve space for cygwin's heap, Win32 error 0
Git Extensions: Everything was working fine until yesterday.
14 Answers
14
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Is there anything like .NET's NotImplementedException in Java?
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Commons Lang has it. Or you could throw an UnsupportedOperationException.
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How to make junior programmers write tests? [closed]
We have a junior programmer that simply doesn't write enough tests.
I have to nag him every two hours, "have you written tests?"
We've tried:
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