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What is the difference between a HashMap and a TreeMap? [duplicate]
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TreeMap is an example of a SortedMap, which means that the order of the keys can be sorted, and when iterating over the keys, you can expect that they will be in order.
HashMap on the other hand, makes no such guarantee. Therefore, when iterating over the keys of a H...
String concatenation: concat() vs “+” operator
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That expression, a+=b. Doesn't it mean: a=a+b?
– most venerable sir
Apr 4 '15 at 20:22
3
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Can jQuery provide the tag name?
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$(this).attr("id", "rnd" + $(this).attr("tag") + "_" + i.toString());
should be
$(this).attr("id", "rnd" + this.nodeName.toLowerCase() + "_" + i.toString());
s...
Check empty string in Swift?
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Here is how I check if string is blank. By 'blank' I mean a string that is either empty or contains only space/newline characters.
struct MyString {
static func blank(text: String) -> Bool {
let trimmed = text.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines...
How to include another XHTML in XHTML using JSF 2.0 Facelets?
...st basic way is <ui:include>. The included content must be placed inside <ui:composition>.
Kickoff example of the master page /page.xhtml:
<!DOCTYPE html>
<html lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:h="http://xml...
Difference between “!==” and “==!” [closed]
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false because "a" is not equals to !" " !" " means cast to bool and negate that so " " is true and !" " is false.
– Zaffy
Sep 8 '12 at 13:07
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Measuring function execution time in R
...log(5)/log(10), times = 10000)
Unit: nanoseconds
expr min lq mean median uq max neval cld
log10(5) 0 0 25.5738 0 1 10265 10000 a
log(5)/log(10) 0 0 28.1838 0 1 10265 10000
Here both the expressions were evaluated 10000 times, with mean execution time bei...
Get: TypeError: 'dict_values' object does not support indexing when using python 3.2.3 [duplicate]
...ourse this code also relies on values being sorted as names which is by no means guaranteed.
– Mr_and_Mrs_D
May 24 '17 at 17:49
2
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Return JSON response from Flask view
... edited Jan 26 '17 at 16:41
davidism
88.4k1717 gold badges279279 silver badges264264 bronze badges
answered Oct 26 '12 at 15:33
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Refresh a page using PHP
...l header, but is supported by many browsers since Netscape Navigator. That means you will have to test to make sure your audience uses supporting browsers.
– Patanjali
Oct 23 '16 at 21:35
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