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How to use orderby with 2 fields in linq? [duplicate]
Say I have these values in a database table
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How to convert list to string [duplicate]
How can I convert a list to a string using Python?
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django - query filter on manytomany is empty
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Adding to @Bernhard answer, other possible solution can be achieved using the Q() object.
from django.db.models import Q
filters = Q(manytomany=None)
TestModel.objects.filter(filters)
Negation:
filters = ~Q(manytomany=None)
TestModel.objects.filter(filters)
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iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
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How to construct a WebSocket URI relative to the page URI?
I want to construct a WebSocket URI relative to the page URI at the browser side. Say, in my case convert HTTP URIs like
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How to perform static code analysis in php? [closed]
Is there an static analysis tool for PHP source files? The binary itself can check for syntax errors, but I'm looking for something that does more, like:
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What is the zero for string?
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That's "" :
var s string
fmt.Println(s=="") // prints "true"
A string cannot be nil (but a *string can).
You can simply test
if stringId=="" {
To pass a zero string in stringID, use
k := NewKey(c, "kind", "", 0, p)
From the specification :
When memory is allocated to store a value, ...
Simultaneously merge multiple data.frames in a list
I have a list of many data.frames that I want to merge. The issue here is that each data.frame differs in terms of the number of rows and columns, but they all share the key variables (which I've called "var1" and "var2" in the code below). If the data.frames were identical in terms of columns, ...
How to parse JSON in Scala using standard Scala classes?
I am using the build in JSON class in Scala 2.8 to parse JSON code. I don't want to use the Liftweb one or any other due to minimizing dependencies.
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How to convert a table to a data frame
I have a table in R that has str() of this:
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