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CSS styling in Django forms
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Taken from my answer to:
How to markup form fields with <div class='field_type'> in Django
class MyForm(forms.Form):
myfield = forms.CharField(widget=forms.TextInput(attrs={'class' : 'myfieldclass'}))
or
class MyForm(forms.ModelForm):
class Meta:...
Using async/await for multiple tasks
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int[] ids = new[] { 1, 2, 3, 4, 5 };
Parallel.ForEach(ids, i => DoSomething(1, i, blogClient).Wait());
Although you run the operations in parallel with the above code, this code blocks each thread that each operation runs on. For example, if the network call takes 2...
How do I add a foreign key to an existing SQLite table?
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You can't.
Although the SQL-92 syntax to add a foreign key to your table would be as follows:
ALTER TABLE child ADD CONSTRAINT fk_child_parent
FOREIGN KEY (parent_id)
REFERENCES parent(id);
SQLite doesn't support the ADD CONSTRAINT ...
What is a method that can be used to increment letters?
... it depends on what you want out of it. The solution above will return '{' for the character after 'z', and this is the character after 'z' in ASCII, so it could be the result you're looking for depending on what your use case is.
Unique string generator
(Updated 2019/05/09)
Since this answer h...
In CMake, how can I test if the compiler is Clang?
We have a set of cross-platform CMake build scripts , and we support building with Visual C++ and GCC .
5 Answers
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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
...sicstore practice tutorial. I noticed something when creating the scaffold for the album manager (add delete edit).
5 Answe...
How to have conditional elements and keep DRY with Facebook React's JSX?
...executed always regardless of whether the condition is true or false. Therefore the following example will fail in case the banner is null (note the property access on the second line):
<If test={this.state.banner}>
<div id="banner">{this.state.banner.url}</div>
</If>
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Linq to Entities join vs groupjoin
... it different from a regular inner Join ? Is it commonly used? Is it only for method syntax? What about query syntax? A c# code example would be nice.
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What is the intent of the methods getItem and getItemId in the Android class BaseAdapter?
...) i can simply call the adapter like adapter.get(position).
The same goes for getItemId. Usually I would use this method when I want to execute some task based on the unique ID of an object in the list. This is especially useful when working with a database. The returned id could be a reference to ...
Sequelize.js delete query?
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For anyone using Sequelize version 3 and above, use:
Model.destroy({
where: {
// criteria
}
})
Sequelize Documentation - Sequelize Tutorial
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