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How do I add a placeholder on a CharField in Django?
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Look at the widgets documentation. Basically it would look like:
q = forms.CharField(label='search',
widget=forms.TextInput(attrs={'placeholder': 'Search'}))
More writing, yes, but the separation allows for better abstractio...
What's the cleanest way of applying map() to a dictionary in Swift?
... cannot be applied to dictionary directly. What's the cleanest way of achieving this?
15 Answers
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How to read a file without newlines?
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You can read the whole file and split lines using str.splitlines:
temp = file.read().splitlines()
Or you can strip the newline by hand:
temp = [line[:-1] for line in file]
Note: this last solution only works if the file e...
how to change default python version?
I have installed python 3.2 in my mac. After I run /Applications/Python 3.2/Update Shell Profile.command , it's confusing that when I type python -V in Terminal it says that Python 2.6.1 , how can I change the default python version?
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How to use a dot “.” to access members of dictionary?
How do I make Python dictionary members accessible via a dot "."?
24 Answers
24
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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
I need to check a JavaScript array to see if there are any duplicate values. What's the easiest way to do this? I just need to find what the duplicated values are - I don't actually need their indexes or how many times they are duplicated.
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Software keyboard resizes background image on Android
Whenever the software keyboard appears, it resizes the background image. Refer to the screenshot below:
17 Answers
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Empty set literal?
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No, there's no literal syntax for the empty set. You have to write set().
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Spring Data: “delete by” is supported?
I am using Spring JPA for database access. I am able to find examples such as findByName and countByName, for which I dont have to write any method implementation. I am hoping to find examples for delete a group of records based on some condition.
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