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Python __call__ special method practical example
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Django forms module uses __call__ method nicely to implement a consistent API for form validation. You can write your own validator for a form in Django as a function.
def custom_validator(value):
#your validation logic
Django has some default built-in validators such as email validators, ur...
Delete a key from a MongoDB document using Mongoose
...doc to plain object and from there use it as usual.
Read more in mongoose api-ref:
http://mongoosejs.com/docs/api.html#document_Document-toObject
Example would look something like this:
User.findById(id, function(err, user) {
if (err) return next(err);
let userObject = user.toObject();
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Difference between Visual Basic 6.0 and VBA
...windowed controls in VB, but in VBA it's a lot harder to use hWnd-oriented API calls because most of the controls are windowless. And, speaking of controls, you can author your own in VB and use them in VBA as well as elsewhere. Lots of other niggles - see the Object Browser (press F2 in the IDE).
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How to initialize a JavaScript Date to a particular time zone
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In environments that have implemented the ECMASCript Internationalization API (aka "Intl"), a Date object can produce a locale-specific string adjusted to a given time zone identifier. This is accomplished via the timeZone option to toLocaleString and its variations. Most implementations will sup...
开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
... 为用户提供了黑名单功能，用户可以通过 Dashboard 和 HTTP API 将指定客户端加入黑名单以拒绝该客户端访问，除了客户端标识符以外，还支持直接封禁用户名甚至 IP 地址，方便用户灵活管理客户端的连接与访问。数据集成Mosquitto ...
Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent
... this was my issue. I included GWT libs, but was missing the Java servlet API jar (servlet-api-3.1.jar from Jetty in this case).
– Jamie
Sep 6 '16 at 14:45
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WebSockets vs. Server-Sent events/EventSource
...estion.
One reason SSEs have been kept in the shadow is because later APIs like WebSockets provide a richer protocol to perform bi-directional, full-duplex communication. Having a two-way channel is more attractive for things like games, messaging apps, and for cases where you need near real-ti...
Android Studio could not find any version that matches com.android.support:appcompat-v7:+
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Open SDK Manager.exe in your Android Studio folder and install a matching API.
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Change UITextField and UITextView Cursor / Caret Color
... @SteffenAndersen it should behave according to the UIAppearance proxy API documentation.
– DiscDev
Apr 29 '14 at 15:36
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Method chaining - why is it a good practice, or not?
... syntactically you can chain anything as long as you are using the correct API for that object in the chain, changing objects IMHO makes things less readable and can be really confusing if the APIs for the different objects have any similarities. If you do some really common method call at the end ...