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Sort hash by key, return hash in Ruby
... to accomplish this you can run the #to_h method on the array of tuples to convert them to a k=>v structure (hash).
hsh ={"a" => 1000, "b" => 10, "c" => 200000}
Hash[hsh.sort_by{|k,v| v}] #or hsh.sort_by{|k,v| v}.to_h
There is a similar question in "How to sort a Ruby Hash by number v...
Do you (really) write exception safe code? [closed]
...r example, a new can throw an exception, but assigning a built-in (e.g. an int, or a pointer) won't fail. A swap will never fail (don't ever write a throwing swap), a std::list::push_back can throw...
Exception guarantee
The first thing to understand is that you must be able to evaluate the exceptio...
“unmappable character for encoding” warning in Java
... as EUC-JP and UTF-8.. If -encoding is not specified, the platform default converter is used. (DOC)
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Customize UITableView header section
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-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.frame.size.width, 18)];
/* Create custom view to display section header... */
UILabel *label = [[UILabel alloc] initWithFra...
How to get the changes on a branch in Git
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'git cherry' outputs a list of commit IDs. Can I convert these into a single diff combining all the changes in every commit?
– Jonathan Hartley
Jul 20 '11 at 15:44
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How to compute the sum and average of elements in an array?
... iterate through the array, since your values are strings, they have to be converted to an integer first. And average is just the sum of values divided by the number of values.
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Does Java have a complete enum for HTTP response codes?
...TTP response codes. It should support conversion to/from the corresponding integer values.
11 Answers
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Android WebView style background-color:transparent ignored on android 2.2
...ompatible with 8
wv.setBackgroundColor(0x00000000);
if (Build.VERSION.SDK_INT >= 11) wv.setLayerType(WebView.LAYER_TYPE_SOFTWARE, null);
this.wv.setWebViewClient(new WebViewClient()
{
@Override
public void onPageFinished(WebView view, String url)
{
wv.setBackgroundColor(0x00...
Iterate over a Javascript associative array in sorted order
...rol over the fact that the data is in a regular object, this utility would convert the regular object to your fully-functional dictionary:
a.importObject = function(object) {
for (var i in object) { this.set(i, object); }
};
This was a object definition (instead of a reusable constructor functi...
How to distinguish mouse “click” and “drag”
...pt>
This is a direct clone of what @wong2 did in his answer, but converted to RxJs.
Also interesting use of sample. The sample operator will take the latest value from the source (the merge of mousedown and mousemove) and emit it when the inner observable (mouseup) emits.
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