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Conditional formatting based on another cell's value

..." option to B5. set the desired color You can repeat this process to add more colors for the background or text or a color scale. Even better, make a single rule apply to all rows by using ranges in "Range". Example assuming the first row is a header: On B2 conditional formatting, set the "Cus...
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How good is Java's UUID.randomUUID?

... @osa: Not producing collisions (more than to be expected from perfect randomness) is pretty much the lowest quality requirement for a RNG, while cryptographic strength is the highest. In other words, a cryptographically strong RNG will most definitely not p...
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How can I create download link in HTML?

...lking about. (It is now safe to use the approach described TIIUNDER's much more recent answer below, though. It should get the accept mark.) – Pekka Dec 25 '14 at 23:51 ...
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Pass a data.frame column name to a function

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Why does CSS not support negative padding?

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Get number of digits with JavaScript

...known behaviour of floating point math, so cast-to-string approach will be more easy and fool proof. As mentioned by @streetlogics fast casting can be done with simple number to string concatenation, leading the replace solution to be transformed to: var length = (number + '').replace('.', '').leng...
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What is the fastest integer division supporting division by zero no matter what the result is?

... turned out to be such a popular question and answer, I'll elaborate a bit more. The above example is based on programming idiom that a compiler recognizes. In the above case a boolean expression is used in integral arithmetic and the use of condition flags are invented in hardware for this purpose....
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What's the best three-way merge tool? [closed]

... More advantages of KDiff3: same interface for Linux and Windows, very smart algorithm for solving conflicts, regular expressions for automatically solving conflicts, integrate with ClearCase, SVN and Git, editable merged file...
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MongoDB: Combine data from multiple collections into one..how?

...d documents. This is a somewhat simple example. You can repeat this with more collections as much as you want to keep building up the reduced collection. You could also do summaries and aggregations of data in the process. Likely you would define more than one reduce function as the logic for ag...
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Which is better in python, del or delattr?

... The first is more efficient than the second. del foo.bar compiles to two bytecode instructions: 2 0 LOAD_FAST 0 (foo) 3 DELETE_ATTR 0 (bar) whereas delattr(foo, "bar") takes five: ...