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Cannot add or update a child row: a foreign key constraint fails
... not sure what the downvote is for; my answer is perfectly valid and correct.
– Brian Driscoll
Feb 15 '11 at 15:20
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JS - get image width and height from the base64 code
...ve a base64 img encoded that you can find here . How can I get the height and the width of it?
4 Answers
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Deleting lines from one file which are in another file
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This has O(n²) complexity and will start to take hours to complete once the files contain more than a few K lines.
– Arnaud Le Blanc
Jan 24 '11 at 10:59
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jQuery Datepicker onchange event issue
...law in the datepicker: It always fires onSelect (even if nothing changed), and doesn't fire any event on the underlying input on change. (If you look in the code of that example, we're listening for changes, but they aren't being raised.) It should probably fire an event on the input when things cha...
Read and write a String from text file
I need to read and write data to/from a text file, but I haven't been able to figure out how.
21 Answers
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MySQL “between” clause not inclusive?
...t out:
select * from person
where CAST(dob AS DATE) between '2011-01-01' and '2011-01-31'
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Detect if a page has a vertical scrollbar?
... +1 but for the sake of exactness, this only checks whether the content expands further than the viewport. If the overflow property of the body is set to hidden somewhere along the line, it won't work. Setting hidden on a body is extremely rare, though.
– Pekka
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How fast is D compared to C++?
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To enable all optimizations and disable all safety checks, compile your D program with the following DMD flags:
-O -inline -release -noboundscheck
EDIT: I've tried your programs with g++, dmd and gdc. dmd does lag behind, but gdc achieves performance...
What's is the difference between include and extend in use case diagram?
What is the difference between include and extend in a use case diagram ?
19 Answers
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Remove multiple whitespaces
I'm getting $row['message'] from a MySQL database and I need to remove all whitespace like \n \t and so on.
15 Answer...