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Decimal number regular expression, where digit after decimal is optional

I need a regular expression that validates a number, but doesn't require a digit after the decimal. ie. 15 Answers ...
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CSV new-line character seen in unquoted field error

the following code worked until today when I imported from a Windows machine and got this error: 9 Answers ...
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What is the error “Every derived table must have its own alias” in MySQL?

I am running this query on MySQL 4 Answers 4 ...
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What is HTML5 ARIA?

What is HTML5 ARIA? I do not understand how to implement it. 5 Answers 5 ...
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How do I make a UITableViewCell appear disabled?

...ut how do I make a cell (or any UIView for that matter) appear disabled (grayed-out) like below? 8 Answers ...
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How to bind an enum to a combobox control in WPF?

I am trying to find a simple example where the enums are shown as is. All examples I have seen tries to add nice looking display strings but I don't want that complexity. ...
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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file

...vironment variable. For example, on my Windows 7 machine, it is in C:\Program Files (x86)\Java\jre6\bin, and my %PATH% variable looks like C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\Java\jre6\bin;C:\WINDOWS\System32\WindowsPowerShell\v1.0\ (and many other entri...
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Convert a row of a data frame to vector

I want to create a vector out of a row of a data frame. But I don't want to have to row and column names. I tried several things... but had no luck. ...
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Changing the color of the axis, ticks and labels for a plot in matplotlib

I'd like to Change the color of the axis, as well as ticks and value-labels for a plot I did using matplotlib an PyQt. 3 An...
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How to sum all column values in multi-dimensional array?

How can I add all the columnar values by associative key? Note that key sets are dynamic. 20 Answers ...