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How to check if a variable exists in a FreeMarker template?
...:
[#if userName??]
Hi ${userName}, How are you?
[/#if]
Or with the standard freemarker syntax:
<#if userName??>
Hi ${userName}, How are you?
</#if>
To check if the value exists and is not empty:
<#if userName?has_content>
Hi ${userName}, How are you?
</#if>
...
strdup() - what does it do in C?
...hat it sounds like, assuming you're used to the abbreviated way in which C and UNIX assigns words, it duplicates strings :-)
Keeping in mind it's actually not part of the ISO C standard itself(a) (it's a POSIX thing), it's effectively doing the same as the following code:
char *strdup(const char *...
how to mysqldump remote db from local machine
... like to use the mysqldump on my machine to connect to the remote database and do the dump on my machine.
4 Answers
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Getting DOM elements by classname
I'm using PHP DOM and I'm trying to get an element within a DOM node that have a given class name. What's the best way to get that sub-element?
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Using MySQL with Entity Framework [closed]
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Does this support EF4 and VS2010? I installed the connector and tried to add a new connection in VS2010 but MySQL does not show up in the list of providers
– Abhijeet Patel
May 13 '10 at 7:07
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Defining and using a variable in batch file
I'm trying to define and use a variable in a batch file. It looks like it should be simple:
3 Answers
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Bash mkdir and subfolders [duplicate]
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your folder and subfolder name can be a variable name as well. For example $data_dir='data' and $sub='subdir'. Then we can create directories like mkdir -p $data_dir/$sub
– Abu Shoeb
Nov 7 '17 at 1:...
Difference Between Select and SelectMany
I've been searching the difference between Select and SelectMany but I haven't been able to find a suitable answer. I need to learn the difference when using LINQ To SQL but all I've found are standard array examples.
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How can I parse a CSV string with JavaScript, which contains comma in data?
...in the comments, this solution does not fit the RFC 4180 definition of CSV and it also does not fit Microsoft Excel format. This solution simply demonstrates how one can parse one (non-standard) CSV line of input which contains a mix of string types, where the strings may contain escaped quotes and ...
Difference between an API and SDK
... to explain what a software interface is with an easier to visually understand hardware analogy
– Sliceoftime
May 7 '09 at 14:50
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