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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>
...
How do browser cookie domains work?
...n/subdomain cookie issues that I'm getting, I'd like to know how browsers handle cookies. If they do it in different ways, it would also be nice to know the differences.
...
How to check if the user can go back in browser history or not
...with this is that in most browsers this is considered a security violation and usually just returns undefined.
history.length
Is a property that others have suggested...
However, the length doesn't work completely because it doesn't indicate where in the history you are. Additionally, it doesn't...
Setting the zoom level for a MKMapView
...
I found myself a solution, which is very simple and does the trick. Use MKCoordinateRegionMakeWithDistance in order to set the distance in meters vertically and horizontally to get the desired zoom. And then of course when you update your location you'll get the right coor...
How to customize user profile when using django-allauth
...rst/last name as in the example above, then you do not need an extra model and can place things directly into the User model. If you would ask for the user's birthdate, his favorite color or whatever, then you need to setup your own profile model for this. Please have a look here on how to do this: ...
Prepend text to beginning of string
...
Perhaps this should be the new standard: each post must also include relevant XKCD.
– Brett84c
Sep 12 '18 at 20:33
1
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How can I remove all objects but one from the workspace in R?
I have a workspace with lots of objects and I would like to remove all but one. Ideally I would like to avoid having to type rm(obj.1, obj.2... obj.n) . Is it possible to indicate remove all objects but these ones ?
...
Shorter syntax for casting from a List to a List?
...ible because it would require co/contravariance of the List<T> type, and that just can't be guaranteed in every case. Please read on to see the solutions to this casting problem.
While it seems normal to be able to write code like this:
List<Animal> animals = (List<Animal>) mamma...
How do I determine file encoding in OS X?
...hich says its default encoding is UTF-8), but LaTeX doesn't seem to understand them.
15 Answers
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How can I write to the console in PHP?
... Firefox you can use an extension called FirePHP which enables the logging and dumping of information from your PHP applications to the console. This is an addon to the awesome web development extension Firebug.
http://www.studytrails.com/blog/using-firephp-in-firefox-to-debug-php/
Chrome
Howev...