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What is Java String interning?
... why you get equals! if you execute the below piece of code.
String s1 = "testString";
String s2 = "testString";
if(s1 == s2) System.out.println("equals!");
If you want to compare Strings you should use equals(). The above will print equals because the testString is already interned for you by t...
efficient circular buffer?
... that here c[0] will always give the oldest-appended element, c[-1] the latest-appended element, c[-2] the penultimate... This is more natural for applications.
c = circularlist(4)
c.append(1); print c, c[0], c[-1] #[1] 1, 1
c.append(2); print c, c[0], c[-1] #[1, 2] 1,...
Floating point vs integer calculations on modern hardware
... * (double)tv.tv_usec);
# endif
}
template< typename Type >
void my_test(const char* name) {
Type v = 0;
// Do not use constants or repeating values
// to avoid loop unroll optimizations.
// All values >0 to avoid division by 0
// Perform ten ops/iteration to reduce
// impac...
Is there a decorator to simply cache function return values?
...y answer to show a decorator function, which works for methods (I actually tested this one).
– Nathan Kitchen
May 3 '09 at 6:08
1
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Run a Docker image as a container
...you didn't specify tag_name it will automatically run an image with the 'latest' tag.
Instead of image_name, you can also specify an image ID (no tag_name).
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Download multiple files with a single action
...y.removeChild(link);
}
<button onclick="downloadAll(window.links)">Test me!</button>
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Open URL in same window and in same tab
... should be prepended with protocol. Without it tries to open relative url. Tested in Chrome 59, Firefox 54 and IE 11.
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Identify if a string is a number
...
You can also use:
stringTest.All(char.IsDigit);
It will return true for all Numeric Digits (not float) and false if input string is any sort of alphanumeric.
Please note: stringTest should not be an empty string as this would pass the test of bei...
How to implement a binary tree?
...rint(tree.getNodeValue())
printTree(tree.getRightChild())
# test tree
def testTree():
myTree = BinaryTree("Maud")
myTree.insertLeft("Bob")
myTree.insertRight("Tony")
myTree.insertRight("Steven")
printTree(myTree)
Read more about it Here:-This is a very simple im...
Two submit buttons in one form
...he first solution shown in Parrot's answer is problematic, as it relies on testing the user-visible value. That is dubious - code that breaks when changing a user-visible word is considered "fragile". The second solution shown in Parrot's answer is fine - it is the same as this one. Parrot's second ...