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How to make HTML input tag only accept numerical values?
...t;input> field only takes numbers as value.
The input is not part of a form. Hence it doesn't get submitted, so validating during submission is not an option. I want the user to be unable to type in any characters other than numbers.
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Does Haskell require a garbage collector?
...l requires a garbage collector, since garbage collection is the highest-performance automatic dynamic memory manager.
However...
Although a garbage collector is necessary, we might try to find some special cases where the compiler can use a cheaper memory management scheme than garbage collection....
android:drawableLeft margin and/or padding
... mm (millimeters).
This may also be a reference to a resource (in the form
"@[package:]type:name") or theme attribute (in the form
"?[package:][type:]name") containing a value of this type.
This corresponds to the global attribute resource symbol
drawablePadding.
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The type or namespace name could not be found [duplicate]
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One is a test project (I'll call it " PrjTest "), the other is a Windows Forms Application project (I'll call it " PrjForm "). There is also a third project referenced by PrjForm, which it is able to reference and use successfully.
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Check if $_POST exists
...return a blank value.
If your $_POST is coming from a user-inputted field/form and is left blank, I BELIEVE (I am not 100% certain on this though) that the value will be "" but NOT NULL.
Even if that assumption is incorrect (someone please correct me if I'm wrong!) the above is still good to know ...
Can JSON start with “[”?
...eroperable in the sense that all
implementations will accept these as conforming JSON texts.
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How to change an Eclipse default project into a Java project
...t Properties
Select Project Facets
If necessary, click "Convert to faceted form"
Select "Java" facet
Click OK
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How do I best silence a warning about unused variables?
I have a cross platform application and in a few of my functions not all the values passed to functions are utilised. Hence I get a warning from GCC telling me that there are unused variables.
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How to change CSS using jQuery?
...ar things up a little, since some of the answers are providing incorrect information:
The jQuery .css() method allows the use of either DOM or CSS notation in many cases. So, both backgroundColor and background-color will get the job done.
Additionally, when you call .css() with arguments you ha...
Logic to test that 3 of 4 are True
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Long but very simple, (disjuntive) normal form:
(~a & b & c & d) | (a & ~b & c & d) | (a & b & ~c & d) | (a & b & c & ~d)
It may be simplified but that requires more thinking :P
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