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How to check if a variable exists in a FreeMarker template?

...me is null, the result if null would be: Hi , How are you? if_exists is now deprecated and has been replaced with the default operator ! as in Hi ${userName!}, How are you? the default operator also supports a default value, such as: Hi ${userName!"John Doe"}, How are you? ...
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How can I clone an SQL Server database on the same server in SQL Server 2008 Express?

...to create a NewDB, it says Permission denied on .mdf file. I don't need it now, I just needed a backup of the original DB, so I can overwrite the original DB with it later, I'm just curious why I'm getting such error. – David Ferenczy Rogožan Oct 6 '15 at 16:0...
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Read specific columns from a csv file with csv module?

... content = list(row[i] for i in included_cols) print content Now that we have covered your mistake, I would like to take this time to introduce you to the pandas module. Pandas is spectacular for dealing with csv files, and the following code would be all you need to read a csv and sa...
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How can I parse a JSON file with PHP? [duplicate]

I tried to parse a JSON file using PHP. But I am stuck now. 16 Answers 16 ...
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Overriding class constants vs properties

...>test; } Note the static keyword. This is uses "late static binding". Now you're parent class will call the const of your child class. share | improve this answer | foll...
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Forcing child to obey parent's curved borders in CSS

...or Firefox 3.6 and below. This is fixed in Firefox 4: Rounded corners now clip content and images (if overflow: visible is not set). https://developer.mozilla.org/en/CSS/-moz-border-radius So you'll still need the fix, just shorten it to: #outer { overflow: hidden; } #inner { -moz-b...
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How do I get the full path to a Perl script that is executing?

...l 5.0.0, which was released in the late '90s—I think it's save to use by now. – Drew Stephens Apr 5 '16 at 12:18  |  show 8 more comments ...
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Matplotlib tight_layout() doesn't take into account figure suptitle

... matplotlib figure it gets overlaid by the subplot's titles. Does anybody know how to easily take care of that? I tried the tight_layout() function, but it only makes things worse. ...
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Javascript what is property in hasOwnProperty?

...ansen - I was wondering that too, but the question has been edited so it's now being called on an object. When it's not, an error is thrown. – James Allardice Feb 22 '12 at 14:31 ...
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git push local branch with same name as remote tag

... Had unknowingly named a tagged release master and could no longer push to the branch with the same name. git push origin refs/heads/master did the trick (then I deleted that tag so it'd stop happening). – tres...