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Margin on child element moves parent element
...rent { overflow: hidden; }
This prevents the margins to collapse. Border and padding do the same.
Hence, you can also use the following to prevent a top-margin collapse:
.parent {
padding-top: 1px;
margin-top: -1px;
}
Update by popular request:
The whole point of collapsing margins is...
Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
..., which has a number of fields, but I'm most concerned about author (a standard CharField).
13 Answers
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How to use querySelectorAll only for elements that have a specific attribute set?
..."])');
This translates to:
get all inputs with the attribute "value" and has the attribute "value" that is not blank.
In this demo, it disables the checkbox with a non-blank value.
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Is there a fixed sized queue which removes excessive elements?
I need a queue with a fixed size. When I add an element and the queue is full, it should automatically remove the oldest element.
...
How to check if all of the following items are in a list?
...nificantly different than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me.
Use the equivalent and more clearly-named method, set.issubset. Note that you don't need to convert the argument to a set; it'll do that for you if needed.
set(['a...
How to create has_and_belongs_to_many associations in Factory girl
...
Factorygirl has since been updated and now includes callbacks to solve this problem. Take a look at http://robots.thoughtbot.com/post/254496652/aint-no-calla-back-girl for more info.
s...
Extracting numbers from vectors of strings
...
How about
# pattern is by finding a set of numbers in the start and capturing them
as.numeric(gsub("([0-9]+).*$", "\\1", years))
or
# pattern is to just remove _years_old
as.numeric(gsub(" years old", "", years))
or
# split by space, get the element in first index
as.numeric(sapply(...
How to retrieve absolute path given relative
Is there a command to retrieve the absolute path given the relative path?
21 Answers
2...
How to avoid the need to specify the WSDL location in a CXF or JAX-WS generated webservice client?
...t;wsdlDirectory>${basedir}/src/main/resources/foo</wsdlDirectory> and <wsdlLocation>/foo/bar.wsdl</wsdlLocation>
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Difference between string object and string literal [duplicate]
...stem.out.println(a == b); // true
Here, 2 different objects are created and they have different references:
String c = new String("abc");
String d = new String("abc");
System.out.println(c == d); // false
In general, you should use the string literal notation when possible. It is easier to re...