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Executing code for every method call in a Ruby module

I'm writing a module in Ruby 1.9.2 that defines several methods. When any of these methods is called, I ... will do so via some variant of puts __method__.) Question&Answers:os...

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

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r - Check if the number is integer

I was surprised to learn that R doesn't come with a handy function to check if the number is integer. is. ... work around if you were in my hypothetical shoes? Question&Answers:os...

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

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351 views

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c# - Which Radio button in the group is checked?

Using WinForms; Is there a better way to find the checked RadioButton for a group? It seems to me that the code ... .Checked == true) { rb = m_RadioButton3; } Question&Answers:os...

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

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c++ - Qt: can't find -lGL error

I just reinstalled QtCreator, created new project (Qt Application) an got this after compilation: /usr/bin/ld: **cannot ... 13.04 How do I solve this problem? Question&Answers:os...

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

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mysql - Query to get all rows from previous month

I need to select all rows in my database that were created last month. For example, if the current month is January, ... in this format: 2007-06-05 14:50:17. Question&Answers:os...

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

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896 views

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wix - Silent installation of a MSI package

I have a MSI package that I need to install if the package is not already installed. Also I need to install ... two issues. I'll use VBScript for scripting. Question&Answers:os...

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

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c - Trying to understand gcc option -fomit-frame-pointer

I asked Google to give me the meaning of the gcc option -fomit-frame-pointer, which redirects me to the ... in an application where there are many functions. Question&Answers:os...

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

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Download image from the site in .NET/C#

I am trying to download images from the site. The code which I am using is working ... NotSupportedException} ReadTimeout 300000 int WriteTimeout 300000 int Question&Answers:os...

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

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python - How to increment a datetime by one day?

How to increment the day of a datetime? for i in range(1, 35) date = datetime.datetime(2003, 8, i) ... need pass through months and years correctly? Any ideas? Question&Answers:os...

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

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How to wrap async function calls into a sync function in Node.js or Javascript?

Suppose you maintain a library that exposes a function getData. Your users call it to get actual data: var ... any npm package despite not working in JSFiddle. Question&Answers:os...

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

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234 views

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java - POST request via RestTemplate in JSON

I didn't find any example how to solve my problem, so I want to ask you for help. I can't simply send ... payment", payment, Payment.class); What is my fault? Question&Answers:os...

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

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C/C++ check if one bit is set in, i.e. int variable

int temp = 0x5E; // in binary 0b1011110. Is there such a way to check if bit 3 in temp is 1 or 0 without ... for this, or am I forced to write one myself. Question&Answers:os...

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

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743 views

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cluster analysis - 1D Number Array Clustering

So let's say I have an array like this: [1,1,2,3,10,11,13,67,71] Is there a convenient way ... , but it doesn't always render the results as expected Question&Answers:os...

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

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loops - "for" vs "each" in Ruby

I just had a quick question regarding loops in Ruby. Is there a difference between these two ways of ... subtle difference (possibly when @collection is nil). Question&Answers:os...

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

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597 views

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java - Print "hello world" every X seconds

Lately I've been using loops with large numbers to print out Hello World: int counter = 0; while(true) { // ... modify the above to print every say 3 seconds? Question&Answers:os...

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

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252 views

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AngularJS and its use of Dollar Variables

Does anyone know if the reasoning behind the use of dollar methods and variables in angularJS is to instruct ... a dollar character in its variable name? Question&Answers:os...

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

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497 views

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javascript - How to unbind a listener that is calling event.preventDefault() (using jQuery)?

jquery toggle calls preventDefault() by default, so the defaults don't work. you can't click a checkbox, you ... is it possible to restore the default handler? Question&Answers:os...

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

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444 views

1 answer

typescript - How to get query parameters from URL in Angular 5?

I'm using angular 5.0.3, I would like to start my application with a bunch of query parameters like /app?param1= ... parameters here... // this.route... } } Question&Answers:os...

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

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214 views

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Allow CORS REST request to a Express/Node.js application on Heroku

I've written a REST API on the express framework for node.js that works for requests from the js console ... headers being sent by the API application? Thanks. Question&Answers:os...

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

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184 views

1 answer

How to refresh an AlertDialog in Flutter?

Currently, I have an AlertDialog with an IconButton. The user can click on the IconButton, I have two colors for each ... (() => pressphone = !pressphone), ), Question&Answers:os...

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

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177 views

1 answer

javascript - Is localStorage.getItem('item') better than localStorage.item or localStorage['item']?

I recently asked a question about LocalStorage. Using JSON.parse(localStorage.item) and JSON.parse(localStorage[' ... work are the shorthand notations okay? Question&Answers:os...

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

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c - Is it possible to tell the branch predictor how likely it is to follow the branch?

Just to make it clear, I'm not going for any sort of portability here, so any solutions that will tie ... branch predictor that it should cache for that branch? Question&Answers:os...

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

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98 views

1 answer

c# - How to programmatically connect a client to a WCF service?

I'm trying to connect an application (the client) to an exposed WCF service, but not through the application ... code. How should I go about doing this? Question&Answers:os...

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

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524 views

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Git on Windows, "Out of memory - malloc failed"

Have run into a problem with repository and tried almost every possible config setting found out there eg. pack. ... but thought I'd ask around first :) Question&Answers:os...

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

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108 views

1 answer

javascript - Local storage in Angular 2

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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327 views

1 answer

c - What do numbers using 0x notation mean?

What does a 0x prefix on a number mean? const int shared_segment_size = 0x6400; It's from a C program. ... amounts to and particularly what the letter x means. Question&Answers:os...

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

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604 views

1 answer

rxjs5 - When to use asObservable() in rxjs?

I am wondering what is the use of asObservable: As per docs: An observable sequence that hides the identity of the ... why would you need to hide the sequence? Question&Answers:os...

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

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703 views

1 answer

Algorithm to compare two images in C#

I'm writing a tool in C# to find duplicate images. Currently I create an MD5 checksum of the files and ... would be the best approach to solve this problem? Question&Answers:os...

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

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