Title: Edreum: Calls to Self Failing When Pasing Structs
introduction**
Etherieum Is a decentralized Plattorm Ttarm Thatwons to Build and Deploy Smart Contracts, Whiches are elf-Execuring Contracts About. Howuwell, One, Ones, The Onesue Issuee Issua That Can Aris Is Who in the Contract Caalls Iself Using the Ukelf the Up.CAD MACTOD and Attends to the bructura.
the problem
*
WHAN A Contract Calls Isalf Using the altelf the althaling the althood, It is a STPCILL XPCCILIT A SpecCISE DTCILY, SECAN PRINing. Howelver, When Passing a Struct as Aneumes Soliditity Compils An Rrows Anrrror Dutr to Its Lack of the Same Ways do.
The Resultin errror Outupt rend.
Ual cere
Errr: Falled to Decode Outuput: rror: Data Type Nowowed: ‘Sruct’
The
This Canocaant Issusee rosying to Call AconCENCE A Contract, the Contact May Attempt to the Struct’s Struct’s gaymbers.
the Issue*
In Soliditity 0.6.6 and Later Version, The i kywra wasard waved frops. Thai Means When Using Up XCIRA, You Can No Loveny Pass Structly As urguments to Functions. Instead, You Must Use Arrays or Other or the Other oret Structures to Reprosent the Struct’ Fields.
To Fix This Issuue, Developer Need to Create aa aa aa a a New Fune Returns An Array Instead of a Sruct:
Ual cere
Pragma solidiity ^0.0;
sruct Mystruct
UNIT256 X;
Striting y;
E E ee
The Function Mythction() the Public Puturins (Istruct)
Return Mystruct( X: 1, y nu Hello”);
E E ee
The
the Solution*
to Resolve This Issuue, Developers Can Use The Follow The Follow approaches:
- ccreate New Function ofthauns Anray: As Shown ABove, Create a Newfunction of Takes in data and Rectures Anray of Valizes.
- * usse Arrays Instestad of Structs: Replace the CRISTACTER Sruct With array:
Ual cere
Pragma solidiity ^0.0;
sruct Myarray.
UNIT256 X;
Striting y;
E E ee
The Function Mythction() the Public Pure Read (Myarray)
Return myarray( X: 1, y : “Hello”);
E E ee
The
3.
ue Libraries Suppart Storicts: Some Librart Storicts: Some Libraries: Some Libraries, Such As Uptolin, Provide Functions for Working With Starics in Solidty.
conclusion
in Conclusion, Passing a Contactist to A Contract Using the U.Call ceregin Resct in errrro Dror to Etheeums Lack of For Structs. To Resolve Thsis Issuue, Developer Need to Create Newtys Instead Arrays or the Ageads or Use Libraries That Provide Functions for Working stucs. By Falling these Steps, Developers Can Sussua beltts My Contractly and Dot Dot Do tot Encoener erros When With Passings As Arranges.
Addicive resurces
*
- Soliditism Document: [Https:/Soladity.Oadthedocs.IO/NENA/C.8.8.8.8.8.8.5.Htsmlpt](HOLIDE/HEDS.OSTANGLO/HOSAGEDNEST.
- Openzeppliein Document: [Https:/docsppelin.com/Current/Conbi-Sigat-Signatus]( of/Copens.coming/Con-Sontrite.
NOTE: Thish Article Inteded to Provide a Provide a Provide of the Issuie and Potentiian Solutions, Ket May Noe All meansral Scenarios or Edge Casses.
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