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jQuery: Best practice to populate drop down?
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Sure - make options an array of strings and use .join('') rather than += every time through the loop. Slight performance bump when dealing with large numbers of options...
var options = [];
$.getJSON("/Admin/GetFolderList/", function(result) {
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notifyDataSetChange not working from custom adapter
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@prom85 can ArrayAdapters even bind to Objects other than Lists or Arrays? I did not know.
– tolgap
Feb 10 '14 at 17:44
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How to detect IE11?
...y-catch block is used to shorten the code, otherwise we'd need to test the array bounds for non-IE browsers.
Note: The user-agent can be spoofed or omitted, sometimes unintentionally if the user has set their browser to a "compatibility mode". Though this doesn't seem like much of an issue in practi...
How does Dijkstra's Algorithm and A-Star compare?
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void dijkstra(int graph[V][V], int src)
{
int dist[V]; // The output array. dist[i] will hold the shortest
// distance from src to i
bool sptSet[V]; // sptSet[i] will true if vertex i is included in shortest
// path tree or shortest distance from src to i ...
How to take column-slices of dataframe in pandas
...tation: .loc is primarily label based, but may also be used with a boolean array. .loc will raise KeyError when the items are not found. A similar statement is made about .iloc excep it specifically refers to index based slicing. In other words in this example, he used label based indexing and .loc ...
What's the safest way to iterate through the keys of a Perl hash?
...case each serves as an iterator whereas keys actually generates the entire array before the loop starts.
So, the only place "each" is of real use is when the hash is very large (compared to the memory available). That is only likely to happen when the hash itself doesn't live in memory itself unle...
Reading specific lines only
... file into memory. You might as well call file.read().split('\n') then use array index lookups to get the line of interest...
– duhaime
Jun 4 '18 at 14:28
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HashMap and int as key
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Just a quick little note, it is better to use ArrayMap or SimpleArrayMap on Android to save memory and increase performance(More information)
– Noah Huppert
Jun 8 '15 at 21:06
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Disable cache for some images
...ers change.
To solve this problem, I needed to hash $_GET but since it is array here is the solution:
$chart_hash = md5(implode('-', $_GET));
echo "<img src='/images/mychart.png?hash=$chart_hash'>";
Edit:
Although the above solution works just fine, sometimes you want to serve the cached ...
AWS S3: how do I see how much disk space is using
...error: In function sum(), invalid type for value: None, expected one of: ['array-number'], received: "null" Otherwise the query works great!
– mechatroner
Feb 24 at 22:14
add ...