Questions tagged [contract]

424 questions
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how to make contract for a non-empty hashtable

Racket has a non-empty-listof contract but no non-empty-hashof contract. Is there a way to build one?
Ben Greenman
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Does VisualStudio 2017 already support C++17 code contracts?

does anyone know whether VS2017 already has support for code contracts as seen here C++17 code contracts? When I try to use them using explicit IniHandler(std::string fileName) [[expects: fileName != nullptr]] { this->fileName = fileName; } It…
Thomas Flinkow
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How to find index of item in contract mapping

I have a mapping defined in my ethereum contract as follows mapping (string => string) client; I have a function that is trying to add clients to this mapping but before i add i wanna check if item already exists. Is there a way i can get index of…
Asif
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How to fix the error when I compile the solidity?

There is the error log when I install the solidity to compile my ethereum contract: "CMake" Error: The following variables are used in this project, but they are set to NOTFOUND. Please set them or make sure they are set and tested correctly in…
Mike
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How can I make a facade that uses a class that requires several repositories in Laravel?

I have been using Laravel for almost a year now, but I am very new to creating my own packages and using Contracts, Repositories, Facades, etc..., so please bear with me. I have having issues understanding if I am registering a facade correctly in…
Aaron Adrian
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Define contract to interact with a class (alternative to static interface)

I've seen this asked, but the standard answer is An interface is a way to define a contract to interact with an object. This is all and well, but I'm in need of a way for a class to describe itself to allow its creation. Specifically, I have…
Benoit Dufresne
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C# print list issue

I'm doing a WCF service with GUI as client, however I have a problem with printing list of current items added. I have a code to add new entries to the list: public bool Add_Data(Data sample) { container.Add(sample); …
jeceko
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How to extend a feature's require conditions in Eiffel?

I have a class, which redefines the copy feature from ANY. I would like to add a new require condition, but I get this error: Assertion in redeclaration uses just 'require' or 'ensure'. invalid precondition feature 'copy' Code: copy ( other : like…
Iter Ator
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Uploading file on Step in Bonita

i would like to upload and download a file. I know the FileUploadDownload Example but i required to upload document on step not on instantiation form.how can i achieve that i have made contract on step and assigned it to document variable…
nagi
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Contract multiple similar attributes in UML

In school we should draw an UML class diagramm for a class we plan to write (we should do the planning). I now have 10 JLabels, which are attributes to the class Game and each showing a different picture, but all off them serving the same purpose.…
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Best way to stop contract algorithm?

I am using c++ and want to create a method, that terminates after a given timespan (e.g. 50microseconds) like a contract algorithm. The method is using loops so my idea was to use the std::chrono::high_resolution_clock::now() method to measure…
lapayo
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Setting up contracts for Paid App?

I'm trying to setup a contract in iTunes Connect, but all I have is the free contract. I don't have the option to setup a new contract. Anyone any ideas why ? Stephen
Stephen
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Why this is false in Groovy `"${'1'}".equals('1')`

Well, actually after checking GString.equals() method implementation it's not a mystery why it works as it works. public boolean equals(Object that) { if (that instanceof GString) { return equals((GString) that); } return…
topr
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Can not setup contact iTunes Connect

When I setup information for the contracts in "Agreements, Tax, and Banking" of iTunesConnect, I can not setup the "Contact info". This is because there is no contact showing when selecting the drop-down list as image blow shows. I have even created…
Justanotherpath
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