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Django rest framework nested self-referential objects
... the `subcategories` field
return CategorySerializer()
Actually, as you've noted the above isn't quite right.
This is a bit of a hack, but you might try adding the field in after the serializer is already declared.
class CategorySerializer(serializers.ModelSerializer):
parentCat...
How to get Locale from its String representation in Java?
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Call requires API level 21 (current min is 17): java.util.Locale#forLanguageTag
– Vlad
Oct 14 '18 at 7:53
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Detecting a mobile browser
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@RichardLovejoy when building sites, the ipad is generally not considered a mobile.
– Michael Zaporozhets
Mar 28 '13 at 11:14
43
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Exact difference between CharSequence and String in java [duplicate]
...h can be modified
Any method which accepts a CharSequence can operate on all of these equally well. Any method which only accepts a String will require conversion. So using CharSequence as an argument type in all the places where you don't care about the internals is prudent. However you should us...
Converting between datetime, Timestamp and datetime64
...>> numpy.__version__
'1.6.2' # current version available via pip install numpy
I can reproduce the long value on numpy-1.8.0 installed as:
pip install git+https://github.com/numpy/numpy.git#egg=numpy-dev
The same example:
>>> from datetime import datetime
>>> import num...
JavaScript - Getting HTML form values
...ns a true/false and im not sure how to determine if the function was even called. Thus you can help.
– user377419
Aug 23 '10 at 13:00
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How to wait for several Futures?
...ave several futures and need to wait until either any of them fails or all of them succeed.
8 Answers
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How do I encode and decode a base64 string?
..., I'll agree that wrapping a deref error is definitely dubious (plus we're all slowly agreeing to the fact that null as a concept is a bit of a hack to begin with), but we can still see some effects otherwise: the parameter name given in the exception might not be correct if left unchecked.
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ZeroMQ的学习和研究（PHP代码实例） - C/C++ - 清泛网 - 专注C/C++及内核技术
...型，分别是“Request-Reply “，”Publisher-Subscriber“，”Parallel Pipeline”,我们从这三种模式一窥 ZMQ 的究竟
ZMQ 的 hello world！
由 Client 发起请求，并等待 Server 回应请求。请求端发送一个简单的 hello，服务端则回应一个 world。请求端...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
... deployed with this application
That URI is for JSTL 1.0, but you're actually using JSTL 1.2 which uses URIs with an additional /jsp path (because JSTL, who invented EL expressions, was since version 1.1 integrated as part of JSP in order to share/reuse the EL logic in plain JSP too).
So, fix the...