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How can I check the size of a collection within a Django template?
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A list is considered to be False if it has no elements, so you can do something like this:
{% if mylist %}
<p>I have a list!</p>
{% else %}
<p>I don't have a list!</p>
{% endif %}
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How to generate Javadoc HTML files in Eclipse?
... Does the Java JDK need to be installed? I have Java installed and can create Java programs in Eclipse...but javadoc.exe does not exist anywhere on my drive!
– AlainD
Jan 7 '17 at 23:36
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How can I disable editing cells in a WPF Datagrid?
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The WPF DataGrid has an IsReadOnly property that you can set to True to ensure that users cannot edit your DataGrid's cells.
You can also set this value for individual columns in your DataGrid as needed.
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Postgresql aggregate array
... GROUP BY, e.g. you don't need to repeat the student name on GROUP BY. You can merely GROUP BY on primary key. If you remove the primary key on student, you need to repeat the student name on GROUP BY.
CREATE TABLE grade
(Student_id int, Mark varchar(2));
INSERT INTO grade
(Student_id, Mar...
AngularJS $http, CORS and http authentication
Because using CORS and http authentication with AngularJS can be tricky I edited the question to share one learned lesson. First I want to thank igorzg. His answer helped me a lot. The scenario is the following: You want to send POST request to a different domain with AngularJS $http service. There ...
How to add 10 days to current time in Rails
...uby..Think you have got it but just to help others
– Catmandu
Jan 28 '14 at 7:09
1
This is just f...
Friend declaration in C++ - difference between public and private
...fference between declaring a friend function/class as private or public? I can't seem to find anything about this online.
3...
Where is Vagrant saving changes to the VM?
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Vagrant imports the base box which is located at ~/.vagrant.d/boxes/, like you said.
This is where the base boxes are kept. It uses it to start a VM from the clean state. When importing a VM, the responsibility of where to store data files and VM state is up to Vir...
R - Markdown avoiding package loading messages
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You can use include=FALSE to exclude everything in a chunk.
```{r include=FALSE}
source("C:/Rscripts/source.R")
```
If you only want to suppress messages, use message=FALSE instead:
```{r message=FALSE}
source("C:/Rscripts/so...
AngularJS: disabling all form controls between submit and server response
...-disabled="isSaving"> ... inputs ...</fieldset>
It will automatically disable all inputs inside the fieldset.
Then in controller set $scope.isSaving to true before http call and to false after.
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