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How to find all combinations of coins when given some dollar value
I found a piece of code that I was writing for interview prep few months ago.
35 Answers
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Android studio using > 100% CPU at all times - no background processes appear to be running
I've noticed Android Studio (when running) uses greater than 100% CPU at all times, even when it appears there are no background processes that the IDE is running (indexing, etc). I might suspect this were something specific to my box, but some fellow developers are encountering this as well.
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Django Forms: if not valid, show form with error message
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If you render the same view when the form is not valid then in template you can access the form errors using form.errors.
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div class="alert alert-danger">
<strong&g...
Java, List only subdirectories from a directory, not files
...ou can use the File class to list the directories.
File file = new File("/path/to/directory");
String[] directories = file.list(new FilenameFilter() {
@Override
public boolean accept(File current, String name) {
return new File(current, name).isDirectory();
}
});
System.out.println(Arrays...
Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
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Just ran into this problem. I don't know if it's the same thing that hit your code, but for me the root cause was because I forgot to put name= on the last argument of the url (or path in Django 2.0+) function call.
For instance, the following...
Automatic HTTPS connection/redirect with node.js/express
I've been trying to get HTTPS set up with a node.js project I'm working on. I've essentially followed the node.js documentation for this example:
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Does it make sense to use “as” instead of a cast even if there is no null check? [closed]
In development blogs, online code examples and (recently) even a book, I keep stumbling about code like this:
13 Answers
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How can I do an asc and desc sort using underscore.js?
...ascending:
[2, 3, 1].sort(); // [1, 2, 3]
// But can be descending if you provide a sort handler:
[2, 3, 1].sort(function(a, b) {
// a = current item in array
// b = next item in array
return b - a;
});
share
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What does void* mean and how to use it?
...t does this void* mean here for the function name and for the variable type, respectively?
10 Answers
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How to compare only date components from DateTime in EF?
...lready stored in the database and the other selected by the user using DatePicker. The use case is to search for a particular date from the database.
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