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c# - Auto-implemented getters and setters vs. public fields

I see a lot of example code for C# classes that does this: public class Point { public int x { get ... passing the values through, it seems needlessly verbose. Question&Answers:os...

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

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242 views

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Date validation with ASP.NET validator

I'm trying to use an ASP.NET RangeValidator to validate a date on a textbox. The format ... TargetControlID="RangeValidator1"> </cc2:ValidatorCalloutExtender> Question&Answers:os...

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

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Need clarification on Scala literal identifiers (backticks)

Reading the Programming in Scala 2nd Ed and I came across this: literal identifier "The idea is that you can ... s method yield instead? Thank you in advance. Question&Answers:os...

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

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python - Color by Column Values in Matplotlib

One of my favorite aspects of using the ggplot2 library in R is the ability to easily specify aesthetics. I can ... "Female","Female","Female","Female"]}) Question&Answers:os...

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

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c - What does malloc(0) return?

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

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swing - Java JTextField with input hint

I would like to add a hint value to my javax.swing.JTextField. It should look like Firefox rendering of ... ) swing component that does something like this? Question&Answers:os...

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

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database - SQL ROWNUM how to return rows between a specific range

How can I return a specific range of ROWNUM values? I'm trying the following: select * from maps006 where ... This returns only rows matching the < operator. Question&Answers:os...

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

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android - Backup and restore SQLite database to sdcard

How can I backup my database to the sdcard automatically in my app? And afterward, how do I restore it? Question&Answers:os...

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

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What is SYSNAME data type in SQL Server?

What is the SQL Server SYSNAME data type for? BOL says: The sysname data type is used for table columns, variables, ... . Is there a use-case you can provide? Question&Answers:os...

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

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Setting environment variables in Linux using Bash

In tcsh, I have the following script working: #!/bin/tcsh setenv X_ROOT /some/specified/path setenv ... environment variables are for locating the executable. Question&Answers:os...

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

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java - What is the difference between Double.parseDouble(String) and Double.valueOf(String)?

I want to convert String to a Double data type. I do not know if I should use parseDouble or valueOf. What is the difference between these two methods? Question&Answers:os...

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

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Failed to resolve: com.android.support:appcompat-v7:27.+ (Dependency Error)

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

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android - java.lang.NoSuchMethodError: No static method getFont(Landroid/content/Context;ILandroid/util/TypedValue;ILandroid/widget/TextView;)

After I updated my Android Studio to 3.0 I am getting No static method getFont() error. The project ... android.internal.os.ZygoteInit.main(ZygoteInit.java:767) Question&Answers:os...

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

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java - org.glassfish.jersey.servlet.ServletContainer ClassNotFoundException

I have been getting a ClassNotFoundException with org.glassfish.jersey.servlet.ServletContainer but it peculiarly started last ... still there in WEB-INF/lib: Question&Answers:os...

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

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c++ - Static Data Member Initialization

Why must static data member initialization be outside the class? class X { public: int normalValue = 5; //NSDMI ... "i") only a declaration, not a definition? Question&Answers:os...

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

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203 views

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python - How do I POST with jQuery/Ajax in Django?

I am trying to POST data using jQuery/AJAX in Django and am having trouble. When I run the code below and click on the ... }); return false; }); }); Any advice? Question&Answers:os...

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

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java - UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define

When I add the configurations for google analytics to my Android project and build the project I get the following ... mean and how can I prevent this error? Question&Answers:os...

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

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408 views

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javascript - Set attribute without value

How do I set a data attribute without adding a value in jQuery? I want this: <body data-body> I tried: ... it possible to just set an attribute without value? Question&Answers:os...

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

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340 views

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Extending Array in TypeScript

How to add a method to a base type, say Array? In the global module this will be recognized interface Array ... ; } but where to put the actual implementation? Question&Answers:os...

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

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298 views

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How to check which notifications are active in status bar in Android Dev?

I have made an app that sets notifications in the drop-down status bar of Android phones. However, there is ... in advance). Sample code is greatly appreciated. Question&Answers:os...

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

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472 views

1 answer

python - dlib installation on Windows 10

I want to use dlib with python for image recognition. I have the python app running great with OpenCV on Windows ... with --cmake parameter. What should I do? Question&Answers:os...

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

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369 views

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datetime - How to change TIMEZONE for a java.util.Calendar/Date

I would like to change the TIMEZONE value in a Java Calendar instance at runtime. I tried below. ... .setTimeInMillis(timezoneAlteredTime); Is this solution ok? Question&Answers:os...

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

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185 views

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html - How can apply multiple background color to one div

I've some scenario where I should use multiple background color to one div. It's better for me rather than using ... me how can I do it? jsfiddle.net/mFjQ6 Question&Answers:os...

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

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139 views

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c# - EF Code-First One-to-one relationship: Multiplicity is not valid in Role * in relationship

I'm attempting to do the following: public class class1 { public int Id {get;set;} [ForeignKey("Class2")] public int ... be '*'. What could be the issue here? Question&Answers:os...

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

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android - Passing data from java class to Web View html

I'm loading below html in my webView https://mail-attachment.googleusercontent.com/attachment/?ui=2&ik= ... this. Any thougths will be appreciated. Question&Answers:os...

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

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117 views

1 answer

Variable declaration in a C# switch statement

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

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292 views

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asp.net - Difference between Session and HttpContext.Current.Session

What is the difference between Session and HttpContext.Current.Session object? Question&Answers:os...

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

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294 views

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c++ - Template specialization of particular members?

Is it possible to specialize particular members of a template class? Something like: template <typename T,bool B> struct ... } Ofcourse, this code isn't valid. Question&Answers:os...

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

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