state | 易学教程

Trouble understanding Object State, Behavior, and Identity?

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问题 I have been instructed by my professor to introduce myself on a page as if I were an object, and that I must address three things: 1) Object State, 2) Behavior, and 3) Identity. However, I am still really confused as to how I would go about doing something like this. (I have read about the three attributes I must address, but I don't know how I would apply it to a person). For example, I was told a dog would have States, such as name, color, and breed; as well as Behaviors, such as walking,

Tools for experimental Protocol Design & Development?

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Are there any open source, high level tools that would facilitate and simplify development of experimental network protocols (TCP/UDP) using a GUI? Basically, something like a dynamic state machine editor that would allow you to define "packets", "messages", "states", "validators", "handlers" etc. Preferably, such a tool would be comprehensive enough to deal with all relevant aspect of the protocol (i.e. client & server), so that the high level protocol description could be serialized out to an XML/RDF file where it could be used to dynamically create application code to implement the protocol

How do I list certain variables in the checkpoint?

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I am working with autoencoders. My checkpoint contains the complete state of the network (i.e. the encoder, decoder, optimizer, etc). I want to fool around with the encodings. Therefore, I would only need the decoder part of the network in my evaluation mode. How can I read only a few specific variables from the existing checkpoint, so that I can reuse their values in another model? Yaroslav Bulatov There's list_variables method in checkpoint_utils.py which lets you see all saved variables. However, for your use-case, it may be easier to restore with a Saver . If you know the names of the

Combine state with IO actions

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问题 Suppose I have a state monad such as: data Registers = Reg {...} data ST = ST {registers :: Registers, memory :: Array Int Int} newtype Op a = Op {runOp :: ST -> (ST, a)} instance Monad Op where return a = Op $ \st -> (st, a) (>>=) stf f = Op $ \st -> let (st1, a1) = runOp stf st (st2, a2) = runOp (f a1) st1 in (st2, a2) with functions like getState :: (ST -> a) -> Op a getState g = Op (\st -> (st, g st) updState :: (ST -> ST) -> Op () updState g = Op (\st -> (g st, ())) and so forth. I want

What is the default drawable for pressing a list item

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When the user presses a ListView item (android:state_pressed="true") it flashes a shade of yellow (or you can press and hold). What drawable is this? I've created my own selector because I want my own ListView item color , but I lose the pressed color. There's an Android doc about skinning buttons that references #ffff0000, but this produces red. Does anyone know what it is and how to reference it? Jonas The default system resources can be found in <android-sdk>/platforms/android-<version>/data/res . In particular, the list selector is defined in drawable/list_selector_background.xml :

When is it OK to use an IORef?

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问题 One thing that has always confused me is whether or not it's an okay time to use an IORef. Are there any guidelines that should be followed when deciding whether or not to use an IORef for a task? When is a good time to use the State monad over an IORef? 回答1: State and its relative ST both produce `monolithic' stateful computations which may be run as units. They basically treat the mutable state as intermediate data, which is needed to produce a result, but should not, in and of itself, be

React - how to pass state to another component

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问题 I'm trying to figure out how to notify another component about a state change. Let's say I have 3 components - App.jsx,Header.jsx,and SidebarPush.jsx and all I'm simply trying to do is toggle a class with an onClick. So the Header.jsx file will have 2 buttons when clicked will toggle the states to true or false. The other 2 components App.jsx and Header.jsx will need to know about these state changes so they can toggle a class whenever those states change. App.jsx import React from 'react';

Different lexer rules in different state

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I've been working on a parser for some template language embeded in HTML (FreeMarker), piece of example here: ${abc} <html> <head> <title>Welcome!</title> </head> <body> <h1> Welcome ${user}<#if user == "Big Joe">, our beloved leader</#if>! </h1> <p>Our latest product: <a href="${latestProduct}">${latestProduct}</a>! </body> </html> The template language is between some specific tags, e.g. '${' '}', '<#' '>'. Other raw texts in between can be treated like as the same tokens (RAW). The key point here is that the same text, e.g. an integer, will mean differently thing for the parser depends on

Where can I get a list of Countries, States and Cities? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . This probably seems like a duplicate, since there are identical questions out there. Unfortunately all of the answers to all of these questions are missing one detail: the states . Where can I get a list of countries, states and cities? For example, I want this: | Sydney | New South Wales | Australia | or |

how can I pass custom data to a state from a view in ui-router?

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I'm using $stateProvider for my route configuration. I wanted to take advantage of custom data they provide to pass some custom data from one partial page to the other (on ng-click ). This is the best I got so far: Attach Custom Data to State Objects You can attach custom data to the state object (we recommend using a data property to avoid conflicts). // Example shows an object-based state and a string-based state var contacts = { name: 'contacts', templateUrl: 'contacts.html', data: { customData1: 5, customData2: "blue" } } $stateProvider .state(contacts) .state('contacts.list', {