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hash function for string
...
I've had nice results with djb2 by Dan Bernstein.
unsigned long
hash(unsigned char *str)
{
unsigned long hash = 5381;
int c;
while (c = *str++)
hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
return hash;
...
I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
...tener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
Or if you are using ButterKnife:
@OnItemSelected(R....
Gradient borders
...roperty always creates square borders even if border-radius is on. So the alternative with nested elements (or a :before element) is the most flexible solution. Here is a JSFiddle thats shows the easyest way this can be done: jsfiddle.net/wschwarz/e2ckdp2v
– Walter Schwarz
...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
..., IsNullOrWhiteSpace is not ideal but is
good. The method calls will result in a small performance penalty.
Further, the IsWhiteSpace method itself has some indirections that can
be removed if you are not using Unicode data. As always, premature
optimization may be evil, but it is also fun.
...
Combating AngularJS executing controller twice
... controller: MyController });
But I also had this in home.html:
<div data-ng-controller="MyController">
This digested the controller twice. Removing the data-ng-controller attribute from the HTML resolved the issue. Alternatively, the controller: property could have been removed fr...
Finding the id of a parent div using Jquery
... of ways! One could be to hide an element that contains the answer, e.g.
<div>
Volume = <input type="text" />
<button type="button">Check answer</button>
<span style="display: hidden">3.93e-6&lt;/span>
<div></div>
</div>
And t...
Difference between declaring variables before or in loop?
...
You beat me I was just about to post my results for profiling, I got more or less the same and yes surprisingly B is faster really would have thought A if I had needed to bet on it.
– Mark Davidson
Jan 2 '09 at 16:27
...
Check if an element contains a class in JavaScript?
...rrent browsers and there are polyfills to support older browsers too.
Alternatively, if you work with older browsers and don't want to use polyfills to fix them, using indexOf is correct, but you have to tweak it a little:
function hasClass(element, className) {
return (' ' + element.classN...
How to draw a line in android
...iew or use a Canvas yourself just simple and clean add the line in xml.
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@android:color/black" />
The example code I provided will generate a line that fills the screen in width and has a height of ...
How to use range-based for() loop with std::map?
...
Each element of the container is a map<K, V>::value_type, which is a typedef for std::pair<const K, V>. Consequently, in C++17 or higher, you can write
for (auto& [key, value]: myMap) {
std::cout << key << " has value " << v...