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Objective-C Static Class Level variables

I have a class Film, each of which stores a unique ID. In C#, Java etc I can define a static int currentID ... found it very hard to find an answer for this. Question&Answers:os...

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

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python - Convert array of indices to 1-hot encoded numpy array

Let's say I have a 1d numpy array a = array([1,0,3]) I would like to encode this as a 2D one-hot array ... just looping over a to set elements of b, that is. Question&Answers:os...

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

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sql server - Which are more performant, CTE or temporary tables?

Which are more performant, CTE or Temporary Tables? Question&Answers:os...

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

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angular - Difference between HttpModule and HttpClientModule

Which one to use to build a mock web service to test the Angular 4 app? Question&Answers:os...

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

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design patterns - Abstract class vs Interface in Java

I was asked a question, I wanted to get my answer reviewed here. Q: In which scenario it is ... better at providing common functionality for unrelated classes. Question&Answers:os...

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

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How to do the equivalent of pass by reference for primitives in Java

This Java code: public class XYZ { public static void main(){ int toyNumber = 5; XYZ temp = new XYZ(); ... Java is pass by value rather than pass by reference? Question&Answers:os...

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

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oop - How can I simulate OO-style polymorphism in C?

Is there a way to write OO-like code in the C programming language? See also: Can you write object-oriented code in C? ... in C Found by searching on "[c] oo". Question&Answers:os...

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

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memory - How do free and malloc work in C?

I'm trying to figure out what would happened if I try to free a pointer "from the middle" for example, ... exceptions and better debug my code? Thanks a lot Question&Answers:os...

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

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.net - Nested using statements in C#

I am working on a project. I have to compare the contents of two files and see if they match each other ... statements. Is there a better way to do this? Question&Answers:os...

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

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Passing a structure through Sockets in C

I am trying to pass whole structure from client to server or vice-versa. Let us assume my structure as follows ... of code added just to send or receive data. Question&Answers:os...

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

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list - Basics of recursion in Python

"Write a recursive function, "listSum" that takes a list of integers and returns the sum of all integers in ... since special built-in functions is not allowed. Question&Answers:os...

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

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audio - Play a Sound with Python

This question already has answers here: Question&Answers:os...

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

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javascript - CORS - How do 'preflight' an httprequest?

I am trying to make a cross domain HTTP request to WCF service (that I own). I have read several techniques ... at the client to preflight my request? Thanks! Question&Answers:os...

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

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190 views

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AngularJS: How to make angular load script inside ng-include?

Hey I am building a web page with angular. The problem is that there are somethings already build without angular ... meaning to script tag. Can I override it? Question&Answers:os...

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

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excel - Last non-empty cell in a column

Does anyone know the formula to find the value of the last non-empty cell in a column, in Microsoft Excel? Question&Answers:os...

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

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361 views

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c++ - Is there any advantage of using map over unordered_map in case of trivial keys?

A recent talk about unordered_map in C++ made me realize that I should use unordered_map for most cases where I ... know that, and am looking for other reasons. Question&Answers:os...

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

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78 views

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How do I check for null values in JavaScript?

How can I check for null values in JavaScript? I wrote the code below but it didn't work. if (pass == ... And how can I find errors in my JavaScript programs? Question&Answers:os...

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

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211 views

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ios - How do I record audio on iPhone with AVAudioRecorder?

Now that iPhone 3.0 SDK is public, I think I can ask this question for those of you that have already been ... looking for a simple sample to get me started. Question&Answers:os...

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

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243 views

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How to add a default include path for GCC in Linux?

I'd like gcc to include files from $HOME/include in addition to the usual include directories, but there doesn' ... approach here, as in the library case. Question&Answers:os...

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

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225 views

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android - Handling click events on a drawable within an EditText

I have added an image right of the text in an EditText widget, using the following XML: <EditText android:id="@ ... image is clicked. How can I do this? Question&Answers:os...

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

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830 views

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internationalization - PHP function to make slug (URL string)

I want to have a function to create slugs from Unicode strings, e.g. gen_slug('Andrés Cortez') should return andres-cortez. How should I do that? Question&Answers:os...

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

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72 views

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How can I use JavaScript source maps (.map files)?

Recently I have seen files with the .js.map extension shipped with some JavaScript libraries (like Angular), and that ... so I assume it's not created manually. Question&Answers:os...

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

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How to remove a field completely from a MongoDB document?

{ name: 'book', tags: { words: ['abc','123'], lat: 33, long: 22 } } Suppose this is a document. How do I remove ... name: 'book', tags: { lat: 33, long: 22 } } Question&Answers:os...

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

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773 views

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timeout - javascript: pause setTimeout();

If I have an active timeout running that was set through var t = setTimeout("dosomething()", 5000), Is ... pause, get the difference between now and then? Question&Answers:os...

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

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251 views

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function - C++ callback using class member

I know this has been asked so many times, and because of that it's difficult to dig through the cruft and find ... just occured owner->Callback(owner,1); } }; Question&Answers:os...

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

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101 views

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How to check if a string contains an element from a list in Python

I have something like this: extensionsToCheck = ['.pdf', '.doc', '.xls'] for extension in extensionsToCheck: if ... for both turns out to be the same though. Question&Answers:os...

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

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358 views

1 answer

Session variables in ASP.NET MVC

I am writing a web application that will allow a user to browse to multiple web pages within the website making ... a session variable? Is there any other way? Question&Answers:os...

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

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230 views

1 answer

.net - How do you configure an OpenFileDialog to select folders?

In VS .NET, when you are selecting a folder for a project, a dialog that looks like an OpenFileDialog or ... MS probably rolled a custom dialog for this task. Question&Answers:os...

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

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