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overriding - Can you override between extensions in Swift or not? (Compiler seems confused!)

I've been working on an iOS application in Swift (much of it being moved from Objective-C). I'm using Core Data ... , inout test: Bool) { } } See Question&Answers more detail:os...

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php - Laravel pluck fields from relations

I have a Seller object which has a related User. I need to fill a select from LaravelCollective so I need to make ... >user->first_name; }); ?> See Question&Answers more detail:os...

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lint - ignore eslint error: 'import' and 'export' may only appear at the top level

Is it possible to deactivate this error in eslint? Parsing error: 'import' and 'export' may only appear at the top level See Question&Answers more detail:os...

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Proper way to reload a python module from the console

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Pointer to array of unspecified size "(*p)[]" illegal in C++ but legal in C

I just found out that this is illegal in C++ (but legal in C): #include <stdio.h> #include <stdlib.h> #define ... C code but illegal C++ code? See Question&Answers more detail:os...

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linux - Search and replace with sed when dots and underscores are present

How do I replace foo. with foo_ with sed simply running sed 's/foo./foo_/g' file.php doesn't work. Thanks! See Question&Answers more detail:os...

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html - How to force fully download txt file on link?

I have one simple text file and I want to download that file on any anchor tag link. But when I click on that link ... here</a> </body> </html> See Question&Answers more detail:os...

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bash - for name in `ls` and filenames with spaces

next code doesnt work because of spaces in file names, How to fix? IFS = ' ' for name in `ls ` do number=` ... mv "$name" "./$number" fi done See Question&Answers more detail:os...

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javascript - How to pass parameters through iframe from parent html?

I have a html page in which I am setting the src for an iframe programmatically. How can I pass parameters ... ', "myIframeRequest.html"); } See Question&Answers more detail:os...

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mysql - Removing duplicates with unique index

I inserted between two tables fields A,B,C,D, believing I had created a Unique Index on A,B,C,D to ... mess the table up or duplicate it. See Question&Answers more detail:os...

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How to add days into the date in android

In my database I am getting start date like 2011-11-30(yyyy/mm/dd)format.and duration date like 40 days.How ... /yyyy. Can anyone help me Thanks See Question&Answers more detail:os...

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html - Flex elements ignore percent padding in Firefox

I'm trying to add padding to an element inside a display:flex element. When the padding is defined as a percent, it ... "> asdf </div> </div> See Question&Answers more detail:os...

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javascript - Mongoose schema within schema

How can I add a schema to another schema? This doesn't seem to be valid: var UserSchema = new Schema({ ... array but not for single. Thanks See Question&Answers more detail:os...

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asp.net mvc 3 - IValidatableObject in MVC3 - client side validation

With MVC3 you have two new mechanisms for adding custom validation. These are (1) subclass ... when using IValidatableObject? See Question&Answers more detail:os...

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Round a decimal to the nearest quarter in C#

Is there a simple way in c# to round a decimal to the nearest quarter i.e. x.0, x.25, x.50 x.75 for ... to 5.0 Thanks in advance for any help. See Question&Answers more detail:os...

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javascript - Why is pop faster than shift?

Douglas Crockford, in JavaScript: The Good Parts, states that "shift is usually much slower than pop". jsPerf ... pretty much the same thing. See Question&Answers more detail:os...

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html - Textarea value not getting posted with form

I'm trying to input a textarea tag when I submit my form: <textarea id="confirmationText" class="text" cols="86" ... see I've set it correctly. See Question&Answers more detail:os...

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python - How to get column by number in Pandas?

What's the difference between: Maand['P_Sanyo_Gesloten'] Out[119]: Time 2012-08-01 00:00:11 0 2012-08-01 00:05 ... ? And not by an Index-string? See Question&Answers more detail:os...

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Java Native Interface 32 bit dll on 64 bit system

E:CodeJavaJNITest>java test Exception in thread "main" java.lang.UnsatisfiedLinkError: E:CodeJavaJNITestest.dll: Can't load ... run at 32-bits? See Question&Answers more detail:os...

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Excel VBA Check if directory exists error

I have a spreadsheet that upon clicking a button will duplicate itself by copying/pasting everything to a new ... MkDir line is highlighted. See Question&Answers more detail:os...

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url - What does the dot-slash do to PHP include calls?

A. What does this do? require ("./file.php"); B. in comparison to this? require ("file.php"); (Its not up- ... be) require ("../file.php"); See Question&Answers more detail:os...

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diff - git difftool to give directory compare?

Is it possible to get the git difftool command to open a directory compare between the changed files and the ... Is that the only option? See Question&Answers more detail:os...

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node.js - Catch all uncaughtException for Node js app

I have a question: how do I can handle all uncaught Exception (operations/developer error will take all service ... me whenever catch an error. See Question&Answers more detail:os...

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c# - When is it appropriate to use the KnownType attribute?

After reading the MSDN reference, I still have questions about when to use the KnownType attribute. I understand ... reference to that type? See Question&Answers more detail:os...

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junit - Android :java.lang.SecurityException: Injecting to another application requires INJECT_EVENTS permission

Hi there I am new to Android Junit testing: I have written some test code in MainActivityFunctionalTest.java file ... this, view); Please help See Question&Answers more detail:os...

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c - How is sleep implemented at the OS level?

I am just interested how sleep(time in ms) is implemented in a C library or basically at the OS level... ... "sleep()" function is implemented. See Question&Answers more detail:os...

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Remove duplicates in an object array Javascript

I have an array of objects list = [{x:1,y:2}, {x:3,y:4}, {x:5,y:6}, {x:1,y:2}] And ... on the other question weren't working in my case. See Question&Answers more detail:os...

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python - How to restore a builtin that I overwrote by accident?

I accidentally overwrote set by using it as a variable name in an interactive python session - is there any way ... course I can if necessary.) See Question&Answers more detail:os...

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

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