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c++ - I want to generate the nth term of the sequence 1,3,8,22,60 ,164 in Order(1) or order of (nlogn)

This sequence satisfies a(n+2) = 2 a(n+1) + 2 a(n). and also a(n)=[(1+sqrt(3))^(n ... for faster generation of this sequence? Please help See Question&Answers more detail:os...

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Control array in VB.NET

How do I make a control array for buttons in VB.NET? Like in Visual Basic 6.0... Is it possible that the ... in myForm a.text = "hello" next See Question&Answers more detail:os...

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assembly - How to read image file and display on screen in windows tasm dosbox

Im currently learning graphical programming in tasm using dosbox. Ive been using a bunch of loops to draw square blocks ... is a start. Pls help See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Automapper: Ignore on condition of

Is it possible to ignore mapping a member depending on the value of a source property? For example if we ... different mappings for each one. See Question&Answers more detail:os...

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html - Why can't a <button> element contain a <div>?

My company is building a website and we had some problems with a JavaScript library not replacing something. We ... able to submit the form. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to replace the buttons (attachment) only w/ Slack interactive buttons response

I've managed to create a simple interactive button Slack app using a Google Apps Script (GAS). I know how to ... in the gif above. Thanks! See Question&Answers more detail:os...

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c - Declaring an array of negative length

What happens in C when you create an array of negative length? For instance: int n = -35; int testArray[n ... it vary from compiler to compiler? See Question&Answers more detail:os...

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python - Getting error 403 while installing package with pip

getting an error while installing google app engine using pip Collecting google_appengine Downloading google-appengine-1 ... /google-appengine/` See Question&Answers more detail:os...

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math - Inaccurate Logarithm in Python

I work daily with Python 2.4 at my company. I used the versatile logarithm function 'log' from the ... in mathematical functions in Python? See Question&Answers more detail:os...

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python - Why allow concatenation of string literals?

I was recently bitten by a subtle bug. char ** int2str = { "zero", // 0 "one", // 1 " ... used string literal concatenation in production code? See Question&Answers more detail:os...

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.net - Why does C#/CLR not support method override co/contra-variance?

There are quite a few questions & answers about hacking around the limitation of C# not allowing method return ( ... which Java supports, IIRC) See Question&Answers more detail:os...

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database - Using COLLATE in Android SQLite - Locales is ignored in LIKE statement

When creating my SQLite database in Android I set the database locale - db.setLocale(new Locale("cz_CZ")). ... how to normalize the String. See Question&Answers more detail:os...

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javascript - Would onClick event work on touch on touch-screen devices?

I've used onclick events in my website. But when I open it in google chromes' developer mode's mobile view ... tested the website on real phone. See Question&Answers more detail:os...

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css - how to make sure select option text align in the center in IE?

The following CSS works in FF, but not in IE(at least 8.0), how can I make sure that the text align in ... , option { text-align: center; } See Question&Answers more detail:os...

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shell - How does AND and OR operators work in Bash?

I tried the following command on bash echo this || echo that && echo other This gives the output this other ... inputs would be very helpful! See Question&Answers more detail:os...

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iequalitycomparer - writing a custom comparer for linq groupby

Again this sample is a very simplified version of my actual problem involving a custom comparer for linq grouping. What have I ... Y + ")"; } } See Question&Answers more detail:os...

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c - Waiting until a file is available for reading with Win32

I'm watching a directory by calling ReadDirectoryChangesW synchronously. When a new file is available, I try to access it ... } ReadFile (...); See Question&Answers more detail:os...

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go - Capture or assign golang template output to variable

Within a template, how can I achieve this? {{$var := template "my-template"}} I just get "unexpected <template> in operand". See Question&Answers more detail:os...

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iphone - Purpose of @ Symbol Before Strings?

I've been using Objective-C for a while now, but have never really understood what the purpose of the @ symbol ... . Is there a good reason? See Question&Answers more detail:os...

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Why is Redirect URL Fully Qualified in Azure AD B2C?

Why does the redirect URL have to match completely? Wouldn't matching at the domain level be sufficient enough ... my B2C app configuration. See Question&Answers more detail:os...

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php - CakePHP Xml utility library triggers DOMDocument warning

I'm generating XML in a view with CakePHP's Xml core library: $xml = Xml::build($data, array('return' => ' ... I just hit a bug in CakePHP? See Question&Answers more detail:os...

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rust - Is there a way to use existing structs as enum variants?

I'm using an enum for polymorphism, similar to the following: enum MyType { Variant1 { a: i32, b: i32 }, ... way to accomplish a similar thing. See Question&Answers more detail:os...

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javascript - How to sort array of objects based on a boolean property?

I have list of users presented in table. Active users should be sorted above the inactive users. I am trying to ... =1112 Any adivce is welcome. See Question&Answers more detail:os...

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behavior of javascript getElementById() when there are elements with duplicate IDs in HTML DOM?

Can someone shed some light on the behavior of javascript getElementById() when there are elements with duplicate IDs in HTML DOM?? See Question&Answers more detail:os...

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c# - Why must local variables have initial values?

Why must I initialize variables inside methods? int test1; // Not initialized, but OK public int Foo() { int test2; ... = test2; // An error } See Question&Answers more detail:os...

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c# - Is it "bad" to use try-catch for flow control in .NET?

I just found in a project: try { myLabel.Text = school.SchoolName; } catch { myPanel.Visible = false; } I ... more than "that's really bad". See Question&Answers more detail:os...

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comet - Javascript implementation of WS-I Reliable Secure Profile

I'm using the .NET 4 server side implementation of Reliable Secure Profile for HTTP/S push and want to ... is a JavaScript client available. See Question&Answers more detail:os...

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scala - Spark DataFrames when udf functions do not accept large enough input variables

I am preparing a DataFrame with an id and a vector of my features to be used later for doing predictions. I do a ... , or there is a better way? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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