parameters

问题 I have the folllowing solution to a problem relating to multiplicative persistence. However, I need to wipe the counter after each function call. I have tried different return statements, counters and arrays. I don't seem to be able to clear the counter after each function call AND get the correct answer. It is adding all the answers from multiple function calls. function persistence(num, counter = 0) { if (num.toString().length != 1) { num = num.toString().split("").filter(Number).reduce((a,

问题 So given a typedef that defines a function pointer with parameter names like this: typedef void(*FOO)(const int arg); Is there a way that I can just use this function pointer to define the signature of my function? Obviously this won't work, but I'd like to somehow use the typedef to specify a function signature with a corresponding type: FOO foo { cout << arg << endl; } Again, I know this doesn't work, and is bad syntax. It will just give the error: error: arg was not declared in this scope

问题 How can I add a sub where statement in SQL if my Boolean parameter is true in JasperReports ? For example, I have my SQL as below: SELECT * FROM shops WHERE region = "Canada" ORDER BY name If my parameter is true, I would like to add and isactive = 'Y' just before ORDER BY . Anybody knows how I can achieve this? 回答1: You can add additional parameter for setting additional clause value. After that you can use $P!{} syntax in query. The sample: <parameter name="param" class="java.lang.Boolean"/

问题 I have a simpleRNN like: model.add(SimpleRNN(10, input_shape=(3, 1))) model.add(Dense(1, activation="linear")) the model summary says: simple_rnn_1 (SimpleRNN) (None, 10) 120 I am curious about the parameter number 120 for simple_rnn_1. Could you someone answer my question? Thanks 回答1: When you look at the headline of the table you see the title Param : Layer (type) Output Shape Param =============================================== simple_rnn_1 (SimpleRNN) (None, 10) 120 This number

问题 Scenario: class A { } class B : A { } class C<T> where T: A { } Question Why cant C<A> = C<B> when B is a subclass of A? it throws the "cannot implicitly convert" error Thanks --UPDATE-- can i create an implicit method for that C<A> would recognize C<B> ? 回答1: Use co-variant if you need to do this, and because co-variant just work only with interface and delegate , so define an interface with the magic word out instead of class: interface IC<out T> where T : A { } So, you can assign like you

问题 Hi I am developing small android application in which I want to use HttpUrlConnection post request with params as json object. But its not working for me I did it in following way: try { URL url; DataOutputStream printout; DataInputStream input; url = new URL ("https://abc.com"); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod("POST"); urlConnection.setDoInput (true); urlConnection.setDoOutput (true); urlConnection.setUseCaches (false

问题 I have a javascript file that I reference in HTML with standard <script src="foo.js?param"></script> . In the file I want to distinguish e.g. loading the file with foo.js from foo.js?auto and foo.js?noauto=true , but not if the file is renamed to bar.js and referenced with the same parameter. How can I accomplish this, preferably not using any framework? 回答1: Take a look a scriptaculous' approach: var js = /scriptaculous\.js(\?.*)?$/; $$('head script[src]').findAll(function(s) { return s.src

问题 I've created a PowerShell script that runs perfectly from the Management Shell. I'm trying to get it setup to work in a scheduled task in Windows Server 2008 R2 and am unsure how to pass the parameters for my string array parameter. Here is the relevant portion of my script: [CmdletBinding()] param( [Parameter(Mandatory=$true)] [String] $BaseDirectory, [String] $BackupMethod = "Full", [Int] $RemoveOlderThanDays = 0, [String] $LogDirectory, [Int] $LogKeepDays = 7, [String[]]

问题 I'd like to pass a multi-dimensional array to a constructor like so: constructor TMyClass.Create(MyParameter: array of array of Integer); begin LocalField := MyParameter; end; Where LocalField is an array of array of Integer. However the above code won't compile ('Identifier expected but ARRAY found'). Could somebody explain to me why this is wrong? I tried reading up on open, static and dynamic arrays but have yet to find something that works. Is there a way to fix it without changing the

问题 I asked a question here about assert which is implemented in the standard as a macro, not a function. This had caused me an issue because the way that assert appears to be a function in the way it takes a parameter: assert(true) Thus I tried to use it as: std::assert(true) and of course being a macro that didn't work. My question is this: Are there any other macros provided by the standard library which would appear as functions that take parameters? 回答1: If we look at [headers] paragraphs 5