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How do you match only valid roman numerals with a regular expression?

...n't even create a regular expression that will match roman numerals (let alone a context-free grammar that will generate them) ...
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What's the difference between URI.escape and CGI.escape?

What's the difference between URI.escape and CGI.escape and which one should I use? 7 Answers ...
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Some font-size's rendered larger on Safari (iPhone)

Are there CSS or other reasons why Safari/iPhone would ignore some font-size settings? On my particular website Safari on the iPhone renders some font-size:13px text larger than font-size:15px text. Does it maybe not support font-size on some elements? ...
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Remove carriage return in Unix

... So how does one change it when you want outfile = infile? – Chris Jul 20 '17 at 0:19 3 ...
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The identity used to sign the executable is no longer valid

...ioning profiles: right-click -> move to trash I saw this error exactly one year after signing up as an Apple developer. share | improve this answer | follow ...
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What's the fastest way to merge/join data.frames in R?

...ds d1 and d2 from the workspace into sqlite's main database clobbering the ones that were there with the indexes. As a result it does a join with no indexes. If you wanted to make use of the versions of d1 and d2 that were in sqlite's main database you would have to refer to them as main.d1 and ma...
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Showing the same file in both columns of a Sublime Text window

...in the next post works - shift + Alt + 2 to split into 2 screens, not this one below. – LED Fantom Oct 21 '16 at 17:12 ...
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How do I check if a list is empty?

...aises an exception "ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()" – Mr.WorshipMe Mar 20 '19 at 18:03 3 ...
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How to return PDF to browser in MVC?

...ng statements are good. If this is a production app with more than, say... ONE person using it, this may cause problems... – vbullinger Sep 25 '12 at 18:48 7 ...
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How do I get IntelliJ to recognize common Python modules?

... Done that, no change. – OrangeDog Jun 1 '16 at 10:17 5 ...