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How can you encode a string to Base64 in JavaScript?
I have a PHP script that can encode a PNG image to a Base64 string.
26 Answers
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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...son$tM[,i])))
colnames(difference) <- colnames(a1)
difference
# a b
#1 4 d
#2 5 e
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Oracle “Partition By” Keyword
... 10 3 <- three because there are three "dept_no = 10" records
4 20 2
5 20 2 <- two because there are two "dept_no = 20" records
If there was another column (e.g., state) then you could count how many departments in that State.
It is like getting the results...
To Workflow or Not to Workflow?
... and business workflows and we are looking at using Windows Workflow (.NET 4.0).
8 Answers
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Writing/outputting HTML strings unescaped
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edited Apr 27 '15 at 4:04
Alexei Levenkov
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How to get the data-id attribute?
...will return the string "123"
or .data() (if you use newer jQuery >= 1.4.3)
$(this).data("id") // will return the number 123
and the part after data- must be lowercase, e.g. data-idNum will not work, but data-idnum will.
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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
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FYI, I combined Keremk's answer with my original outline, cleaned-up the typos, generalized it ...
How to extract numbers from a string in Python?
...nly positive integers, try the following:
>>> str = "h3110 23 cat 444.4 rabbit 11 2 dog"
>>> [int(s) for s in str.split() if s.isdigit()]
[23, 11, 2]
I would argue that this is better than the regex example because you don't need another module and it's more readable because you d...
How to make good reproducible pandas examples
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Note: The ideas here are pretty generic for Stack Overflow, indeed questions.
Disclaimer: Writ...
How do I switch between the header and implementation file in Xcode 4?
How do I switch between the header and implementation file in Xcode 4?
7 Answers
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