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

...g in "userName", the <#if userName??> will return true !! See @user1546081 answer on this page to address this issue. – Adrien Be Jan 15 '13 at 10:22 add a comment ...
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How can I move a single directory from a git repository to a new repository whilst maintaining the h

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What is the best way to deal with the NSDateFormatter locale “feechur”?

...t too. – Hot Licks Mar 10 '15 at 11:46 add a comment  |  ...
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Should I use the Reply-To header when sending emails as a service to others?

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Assign multiple columns using := in data.table, by group

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Does .NET have a way to check if List a contains all items in List b?

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“icon-bar” in twitter bootstrap navigation bar

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What is the difference between object keys with quotes and without quotes?

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Mockito: Inject real objects into private @Autowired fields

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MySQL foreign key constraints, cascade delete

...e last ;. – Patrick Apr 28 '14 at 0:46 add a comment  |  ...