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This may seem stupid, but I still couldn't figure out how to mark a attribute as a primary key in ... write a validation method or something? See Question&Answers more detail:os...

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

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c++ - Allow for Range-Based For with enum classes?

I have a recurrent chunk of code where I loop over all the members of an enum class. The for loop that I currently ... COLOR ) { // do work } See Question&Answers more detail:os...

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

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security - OAuth2 and Google API: access token expiration time?

We have a standalone Java application (see "Installed application") which runs periodically and uses Google API ... - default expiration times. See Question&Answers more detail:os...

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

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MySQL connection over SSH tunnel - how to specify other MySQL server?

I've got ~50 databases all set up at different host names, with the requirement that I connect to them through an ... 't seem to figure it out. See Question&Answers more detail:os...

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

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html - SVG coordinates with transform matrix

I want to implement the functionality like svg-edit on rectangle element Rotate rectangle Resizing Drag Rotating the ... with drag function. See Question&Answers more detail:os...

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

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Remove ?, 🔥, ? , ? and other such emojis/images/signs from Java strings

I have some strings with all kinds of different emojis/images/signs in them. Not all the strings are ... in the different languages? See Question&Answers more detail:os...

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

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javascript - Convert integer into its character equivalent, where 0 => a, 1 => b, etc

I want to convert an integer into its character equivalent based on the alphabet. For example: 0 => a 1 ... 's position in the alphabet. See Question&Answers more detail:os...

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

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php - Trying to get Laravel 5 email to work

I'm trying to send an email to a specified user by typing in the URL, but I'm ... [email protected] MAIL_PASSWORD=MyPassword See Question&Answers more detail:os...

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

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reactjs - Visual studio code changes format (React-JSX)

I've the following snippet in my index.js class App extends Component { render() { return ( <div style = { ... } How can I solve this? thanks See Question&Answers more detail:os...

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

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javascript - How to make <input type="date"> supported on all browsers? Any alternatives?

I'm working with HTML5 elements input attributes and only Google Chrome supports the date, time attributes. I ... attributes to all browsers. See Question&Answers more detail:os...

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

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Android: Capturing the return of an activity

I have a question regarding launching new activities. It boils down to this. I have 3 tabs on a view A) ... you return. any Suggestions? Thanks, See Question&Answers more detail:os...

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

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newline - What are the differences between char literals ' ' and ' ' in Java?

In Java, the newline and carriage return characters are both seem to be showing same effect. What are the ... other question isn't relevant. See Question&Answers more detail:os...

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

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kotlin - How can I represent a "many to many" relation with Android Room when column names are same?

How can I represent a "many to many" relation with Room? My column names are also the same. e.g. I ... to find a working sample of @Relation. See Question&Answers more detail:os...

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

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c - Regular expression for a string literal in flex/lex

I'm experimenting to learn flex and would like to match string literals. My code currently looks like: """ ... with flex. Please advise! See Question&Answers more detail:os...

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

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formarray - Angular Reactive Forms with nested Form Arrays

I'm new to Angular 2 and decided the best way to learn would be to go through the official Angular guides. I ... a Secret Lair</button> </div> See Question&Answers more detail:os...

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

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android - Enable rear camera with HTML5

I'm working on a project with MVC ASP.Net 4 HTML5 (default browser is google-chrome v29.0.1547.57) I can interact ... 2 I hope you can help me See Question&Answers more detail:os...

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

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android - Selected tab's color in Bottom Navigation View

I'm adding a BottomNavigationView to a project, and I would like to have a different text (and icon tint) ... > I would appreciate any help. See Question&Answers more detail:os...

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

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javascript - In React, what's the difference between onChange and onInput?

I've tried searching around for an answer to this, but most of them are outside the context of React, where ... anyone shed some light on this? See Question&Answers more detail:os...

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

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java - How to create your own library for Android development to be used in every program you write?

I am a Delphi programmer and have written, over the years, hundreds of classes and routines which I can use in ... will save much time. Thanks. See Question&Answers more detail:os...

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

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java - How to install JDK 10 under Ubuntu?

How do I install Java Development Kit (JDK) 10 on Ubuntu? The installation instructions on Oracle's help center ... , without any system setup. See Question&Answers more detail:os...

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

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asp.net mvc - How can I load Partial view inside the view?

I am very confuse with this partial view. I want to load a partial view inside my main view. Here is the ... t want to use Ajax.ActionLink . See Question&Answers more detail:os...

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

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postgresql - Copy a few of the columns of a csv file into a table

I have a CSV file with 10 columns. After creating a PostgreSQL table with 4 columns, I want to copy some of 10 ... should be like: x2 x5 x7 x10 See Question&Answers more detail:os...

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

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Using a Rails helper method within a javascript asset

Is there any way to use a Rails helper method, more specifically, a path helper method within a javascript asset file ... .val("path/to/create") See Question&Answers more detail:os...

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

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java - spring mvc rest service redirect / forward / proxy

I have build a web application using spring mvc framework to publish REST services. For example: @Controller ... ? Thanks in advance. See Question&Answers more detail:os...

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

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Best representation of an ordered list in a database?

I know that this sort of goes against the principles of a relational database but let me describe the situation. I ... of? Please let me know. See Question&Answers more detail:os...

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

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windows - Python virtualenv questions

I'm using VirtualEnv on Windows XP. I'm wondering if I have my brain wrapped around it correctly: I ran ... quite the beginner at Linux). See Question&Answers more detail:os...

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

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android - how to get images dynamically from drawable folder

I have an array like this. int image[] = {R.drawable.d002_p001,R.drawable.d002_p002,R.drawable.d002_p003, R. ... dynamic how can I achieve this. See Question&Answers more detail:os...

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

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python - Computing diffs within groups of a dataframe

Say I have a dataframe with 3 columns: Date, Ticker, Value (no index, at least to start with). I have ... '] to the original dataframe df? See Question&Answers more detail:os...

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

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