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objective c - Is there a free iPhone compiler and emulator?

I am looking for a free iPhone compiler and emulator to learn the basics of iPhone programming. Are there any? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - Accessing controls from different forms

I have a main form with some buttons, textboxes, labels, etc. On a second form I would like to copy the text ... there. What am I doing wrong? See Question&Answers more detail:os...

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defining matrix class in python

Define a class that abstracts the matrix that satisfies the following examples of practice See Question&Answers more detail:os...

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if statement - Java - If Else Logic

I'm having a difficult time understanding why the second string does not print. Even if I comment out the " ... be printed. Thanks in advance! See Question&Answers more detail:os...

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C++ How can I access to an inner enum class?

I am facing a problem in c++: #include <iostream> class Apple{ public: int price = 100; enum class color { ... ' is not a class or namespace See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Why doesn't MySQL allow auto_increment on VARCHAR columns?

I have the following SQL statement: CREATE TABLE patient( patient_id VARCHAR(10) NOT NULL DEFAULT 1000 ... the default value work? See Question&Answers more detail:os...

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selenium webdriver - Cross Browser testing in TestNG with selected test cases

Is it possible to run cross browser testing from TestNG with selected test cases on selected browser? For ... chrome etc. Thanks, Sudhakar See Question&Answers more detail:os...

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mysql - Why don't oracle support Updating multiple table in a single query?

is following sql valid ? UPDATE suppliers, contacts SET suppliers.status = 'Active', contacts.note = 'Also ... statement in SQL Server 2005? See Question&Answers more detail:os...

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c# - Why is the SqlConnection with Textbox not working?

I'm using this code for connection string: namespace TransInsert { public partial class Form1: Form { public ... 'TransInsert.Form1.textBox1' See Question&Answers more detail:os...

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python - To input a file and get a formatted string output using .format()

Write a function named calculate_expenses that receives a filename as argument. The file contains the information about a ... what to do next. See Question&Answers more detail:os...

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c - Definition of structures and arrays

I have the following code: struct dmparam { char *p; char *v; }; struct dmobj { int a; int b; struct dmparam ... 's the best way to write this? See Question&Answers more detail:os...

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javascript - The event handler to select

I took the example of the here, Demo 6 Everything works fine, however I can not figure out how to put ... hidden field??? Thanks in advance See Question&Answers more detail:os...

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android - SQLiteLog: (1) near "Produse": syntax error

I Want to add data from another class into my database and I get this errors: "SQLiteLog: (1) near "Produse": ... values); db.close(); } } See Question&Answers more detail:os...

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ios - How to get dates for every thursday or other day of week in specific month?

I want to get date of particular day for every week. Suppose I have a date: 2017-04-13. It is an April, and 13 ... 04-13, 2017-04-20, 2017-04-27 See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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sqlite - Complex query on sql lite xcode

I'm developing an iOS app and I have a sqlite database with 2 tables related by 1-to-many relationship. Now ... each artist in the same query? See Question&Answers more detail:os...

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neural network - implement dropout layer using nn.Sequential()

I am trying to implement a Dropout layer using pytorch as follows: class DropoutLayer(nn.Module): def __init__(self ... new to pytorch. Thanks. See Question&Answers more detail:os...

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jquery - Any Javascript GURU here to make this Script ? If Anchor is Changed Redirect the Page

Javascript expert, i used a link in my own created templates...as you see the below ones: <a href='http:/ ... "Blogging Tips" to "Awesome Tips" See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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kubernetes - Is it possible to exec in to a K8s pod the same way we exec in to a docker containers or containers running inside of a pod?

Is it possible to exec in to a K8s pod the same way we exec into docker containers or containers running inside ... container in a POD in K8S? See Question&Answers more detail:os...

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kotlin - What's the difference between Calendar.getInstance().get(Calendar.DAY_OF_WEEK) and Calander.DAY_OF_WEEK in java

I'm new to Kotlin and while doing a course there was a bit where you worked with the current weekday. ... the two. Thanks for the explanation See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to trim the end of a string after the first occurrence of a char C#

I want to trim the end of a string after the first occurence of a given character, in this case '.' This ... and remove the rest of the string. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to count elements of array in c++

I have an array with a particular size (100 for example), which is filled with user input. However, the user ... , it's just an example. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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PHP session variables wont work

I am a PHP learner, and I have got some problems with PHP sessions. I am trying to do a simple login test, but ... > </head> <body> </body> See Question&Answers more detail:os...

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Row Average CSV Python

Im looking for a piece of code that will print the average for each users score from a csv. It needs to ... and then print the output. Cheers. See Question&Answers more detail:os...

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arrays - Permutation programming challenge (Java)

Ok, so I have a programming challenge which I have tried solving myself but am really struggling with. To start off you ... .add(query); } } } See Question&Answers more detail:os...

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reactjs - functional component to class component

hi i want use dialog box in my project...but i got that diaog box with functional component...can any one to convert ... </Dialog> </div> ); } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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the return statement of C in a function

I am a newbie of C language, I have a question about return statement in C: void verifyValue(int value) ... in verifyValue() really returned? See Question&Answers more detail:os...

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extract - Live statistics chess960 from chess.com?

Cross-posted chess se, but nothing. Both lichess and chess.com have the feature to play the variant chess960 ... for mixed chess960 and chess. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - Add image to JPanel within JLabel

I have this code: import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; ... worked out for me. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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