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java - Why are integer literals with leading zeroes interpreted strangely?

This prints 83 System.out.println(0123) However this prints 123 System.out.println(123) Why does it work that way? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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169 views

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c# - How to use LINQ to select object with minimum or maximum property value

I have a Person object with a Nullable DateOfBirth property. Is there a way to use LINQ to query a list of Person ... ; Or is there a leaner way of doing it? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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300 views

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How to prevent scanf causing a buffer overflow in C?

I use this code: while ( scanf("%s", buf) == 1 ){ What would be the best way to prevent possible buffer ... be done safely using scanf and I should use fgets? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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523 views

1 answer

C# compiler error: "not all code paths return a value"

I'm trying to write code that returns whether or not a given integer is divisible evenly by 1 to 20, but I keep receiving ... num == 20) { return true; } } } Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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187 views

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html - Proper use of flex properties when nesting flex containers

I am having problems using flexbox properly and wanted to get some clarification on how nesting parent and child elements works. ... '>child</div> </div> </div> Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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231 views

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oop - How would one write object-oriented code in C?

Closed. This question needs to be more focused. It is not currently accepting answers. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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86 views

1 answer

javascript - Random color generator

Given this function, I want to replace the color with a random color generator. document.overlay = GPolyline.fromEncoded({ color: ... : 4 }); How can I do it? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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82 views

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How to send an email from JavaScript

I want my website to have the ability to send an email without refreshing the page. So I want to use Javascript. <form action=" ... () { /* ...code here... */ } Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Is using Random and OrderBy a good shuffle algorithm?

I have read an article about various shuffle algorithms over at Coding Horror. I have seen that somewhere people have ... Is it an acceptable way of doing this? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How do you fix "runtimeError: package fails to pass a sanity check" for numpy and pandas?

This is the error I am getting and, as far as I can tell, there is nothing useful on the error link to fix ... . I am currently using PyCharm to do all this. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer

java - What are the reasons why Map.get(Object key) is not (fully) generic

What are the reasons behind the decision to not have a fully generic get method in the interface of java ... same thing for remove, containsKey, containsValue). Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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137 views

1 answer

How to transfer data from JSP to servlet when submitting HTML form

I have a JSP page with an HTML form: <form action="SERVLET"> <input type="text" name="name"/><br> <input ... these data in a servlet and add them to database? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

1 answer

c# - How do you create a custom AuthorizeAttribute in ASP.NET Core?

I'm trying to make a custom authorization attribute in ASP.NET Core. In previous versions it was possible to ... 'll know whether a particular action is valid. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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138 views

1 answer

How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?

It's a sad fact of life on Scala that if you instantiate a List[Int], you can verify that your instance is a List, ... Why is that, and how do I get around it? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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72 views

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python - Getting the name of a variable as a string

This thread discusses how to get the name of a function as a string in Python: How to get a function ... columns = [retrieve_name(d) for d in list_of_dicts] Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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236 views

1 answer

html - My inline-block elements are not lining up properly

All of the elements within .track-container should line up nice and in line, each side by side, constrained by the ... class="track-info">fdafdsa</div> </div> Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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557 views

1 answer

java - Why does Gson fromJson throw a JsonSyntaxException: Expected BEGIN_OBJECT but was BEGIN_ARRAY?

(This post is meant to be a canonical question with a sample answer provided below.) I'm trying to deserialize ... convert my JSON text to my POJO type? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

1 answer

git - How do you fix a bad merge, and replay your good commits onto a fixed merge?

I accidentally committed an unwanted file (filename.orig while resolving a merge) to my repository several commits ago ... to the repository in the first place? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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227 views

1 answer

.net - C# Interfaces. Implicit implementation versus Explicit implementation

What are the differences in implementing interfaces implicitly and explicitly in C#? When should you use implicit and ... anyone touch on that aspect as well? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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190 views

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javascript - Scroll to bottom of div?

I am creating a chat using Ajax requests and I'm trying to get messages div to scroll to the bottom without ... it scrolled to the bottom after an ajax request? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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347 views

1 answer

Dots in URL causes 404 with ASP.NET mvc and IIS

I have a project that requires my URLs have dots in the path. For example I may have a URL such as www.example. ... to configure so I can have dots in my URL? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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178 views

1 answer

javascript - Chrome/Firefox console.log always appends a line saying 'undefined'

Every time console.log is executed, a line saying undefined is appended to the output log. It happens in both Firefox and Chrome on Windows and Linux. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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262 views

1 answer

linux - Facing an error "*** glibc detected *** free(): invalid next size (fast)"

Please see MSO question A long list of possible duplicates -?C memory allocation and overrunning bounds for ... these approaches and how should I proceed? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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263 views

1 answer

oop - What does 'super' do in Python? - difference between super().__init__() and explicit superclass __init__()

What's the difference between: class Child(SomeBaseClass): def __init__(self): super(Child, self).__init__() and: ... of using it in this kind of situation. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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58 views

1 answer

java - Migrating from JSF 1.2 to JSF 2.0

I am working with a rather large app written in JSF 1.2. JSF 1.2 is around 6 years old now. I ... that some attributes in custom tags have been changed etc. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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305 views

1 answer

c# - How to limit the amount of concurrent async I/O operations?

// let's say there is a list of 1000+ URLs string[] urls = { "http://google.com", "http://yahoo.com", ... given time. How to do it in the most efficient manner? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

168 views

1 answer

html input - Best way to remove an event handler in jQuery?

I have an input type="image". This acts like the cell notes in Microsoft Excel. If someone enters a number ... #myimage').click(function { return false; }); Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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326 views

1 answer

apache - htaccess redirect to https://www

I have the following htaccess code: <IfModule mod_rewrite.c> RewriteEngine On RewriteCond !{HTTPS} off RewriteRule ^(. ... me to https://www with HTTPS. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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