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Returning multiple values from a C++ function
Is there a preferred way to return multiple values from a C++ function? For example, imagine a function that divides two integers and returns both the quotient and the remainder. One way I commonly see is to use reference parameters:
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Spring 3 RequestMapping: Get path value
... foo( @PathVariable String id, HttpServletRequest request ) {
String urlTail = new AntPathMatcher()
.extractPathWithinPattern( "/{id}/**", request.getRequestURI() );
}
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How would I get a cron job to run every 30 minutes?
I'm looking to add a crontab entry to execute a script every 30 minutes, on the hour and 30 minutes past the hour or something close. I have the following, but it doesn't seem to run on 0.
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Django optional url parameters
... approaches.
One is to use a non-capturing group in the regex: (?:/(?P<title>[a-zA-Z]+)/)?
Making a Regex Django URL Token Optional
Another, easier to follow way is to have multiple rules that matches your needs, all pointing to the same view.
urlpatterns = patterns('',
url(r'^projec...
Vertically centering a div inside another div [duplicate]
... example
Tested in:
FF3.5+
FF4+
Safari 5+
Chrome 11+
IE9+
HTML
<div class="cn"><div class="inner">your content</div></div>
CSS
.cn {
display: table-cell;
width: 500px;
height: 500px;
vertical-align: middle;
text-align: center;
}
.inner {
display: in...
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
...rns the elementwise-and of the two
boolean arrays.
The NumPy developers felt there was no one commonly understood way to evaluate
an array in boolean context: it could mean True if any element is
True, or it could mean True if all elements are True, or True if the array has non-zero length, just to...
When should I use the HashSet type?
I am exploring the HashSet<T> type, but I don't understand where it stands in collections.
11 Answers
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POST unchecked HTML checkboxes
I've got a load of checkboxes that are checked by default. My users will probably uncheck a few (if any) of the checkboxes and leave the rest checked.
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How do I set vertical space between list items?
Within a <ul> element, clearly the vertical spacing between lines can be formatted with the line-height attribute.
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Android - custom UI with custom attributes
...and new to define some specific behavior I am not able to handle with default propertis or attributes)
3 Answers
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