Month: November 2022

[Solved] When I enter 2 letters it searches about one one I would search about 2 letters at once to get value

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If I understand what’s going on, your problem is this line: var index = code.indexOf(msg[i]); msg[i] is the same thing as msg.charAt(i), which only gives you a single character from the string. If you want to check two characters per index, you need to use String#substr(start, length) with a length argument of 2: var index … Read more

[Solved] is there a R code for group_by and combinations

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Introduction Group_by and combinations are two powerful tools in the R programming language. They allow users to quickly and easily manipulate data and create meaningful insights. Group_by allows users to group data by one or more variables, while combinations allow users to create all possible combinations of a set of variables. In this article, we … Read more

[Solved] Javascript – What is wrong with my code?

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Introduction Welcome to the world of Javascript! Javascript is a powerful and versatile programming language that can be used to create dynamic and interactive webpages. It is one of the most popular programming languages used today. If you are new to Javascript, you may find yourself asking the question, “What is wrong with my code?” … Read more

[Solved] Duplicate data issue android sqlite

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You should have a SQLiteOpenHelper class which contains some methods for database management and lifecycle like onCreate(SQLiteDatabase db) // Called when the database is created for the first time. onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) //Called when the database needs to be downgraded. onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) // Called when the database needs … Read more

[Solved] How close validation CSRF token in form?

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Introduction Cross-site request forgery (CSRF) is a type of attack that occurs when a malicious website, email, or program causes a user’s web browser to perform an unwanted action on a trusted site for which the user is currently authenticated. To prevent this type of attack, it is important to close validation CSRF tokens in … Read more

[Solved] Very basic Riemann sum in Python

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I really suggest you to take a look over the documentation. A simple loop would solve your problem: a = [1, 2, 3, 4, 5] results = [] for i in range(len(a)-1): results.append((a[i]+a[i+1])/2) print(results) Output: [1.5, 2.5, 3.5, 4.5] 1 solved Very basic Riemann sum in Python

[Solved] How to know what child is belonging to their parent?

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You have an XML-file and you want to read it with a Java-program. You could either go through hell and write your own program to read XML-files, or you use already existing packages for that, for example the SAX-library. To use SAX-parser use these import-statements: import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler; … Read more

[Solved] Python Lists and tuples

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Problem is you are trying to send a array that is a python list. At first you need to convert it into nampy array. import numpy as np py_list = [439, 301, 481, 194, 208, 415, 147, 502, 333, 86, 544, 353, 229] convert_numpy = np.array(py_list ) sent = sent[np.convert_numpy,:] and for 1st line [439 … Read more