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python - Pygame window not responding after a few seconds

This simple piece of code crashes (the window is not responding) after a few seconds (around 5). import pygame from ... Windows 8 (64 bits) and Eclipse + PyDev. Question&Answers:os...

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

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python - What is the best way to call a script from another script?

I have a script named test1.py which is not in a module. It just has code that should execute when the script itself ... of doing this. Or at least I hope so. Question&Answers:os...

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

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javascript - CanvasContext2D drawImage() issue [onload and CORS]

I am trying to paint an image on a canvas before I get its dataURL(), but the data returned is like empty. ... I just get "SecurityError". What does it mean ? Question&Answers:os...

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

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javascript - Passing data to a bootstrap modal

I've got a couple of hyperlinks that each have an ID attached. When I click on this link, I want to open a ... How to set the input value in a modal dialogue?) Question&Answers:os...

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

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html - How can I position my div at the bottom of its container?

Given the following HTML: <div id="container">  <div id="copyright"> Copyright Foo web designs </div> </div> Question&Answers:os...

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

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parsing - Parse query string in JavaScript

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

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bash - How to permanently set $PATH on Linux/Unix

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

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performance - How to efficiently count the number of keys/properties of an object in JavaScript

What's the fastest way to count the number of keys/properties of an object? Is it possible to do this ... but this was removed somewhere around version 4.) Question&Answers:os...

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

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Define a global variable in a JavaScript function

Is it possible to define a global variable in a JavaScript function? I want use the trailimage variable (declared in the makeObj ... /> </form> </body> </html> Question&Answers:os...

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

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sql - Find records from one table which don't exist in another

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

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javascript - Check if an image is loaded (no errors) with jQuery

I'm using JavaScript with the jQuery library to manipulate image thumbnails contained in a unordered list. When the ... 't tell if an error occurred instead. Question&Answers:os...

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

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javascript - How do I get started with Node.js

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

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python - How do I write JSON data to a file?

I have JSON data stored in the variable data. I want to write this to a text file for testing so I don't have ... be string or buffer, not dict How to fix this? Question&Answers:os...

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

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java - String concatenation: concat() vs "+" operator

Assuming String a and b: a += b a = a.concat(b) Under the hood, are they the same thing? Here is concat decompiled ... return new String(0, count + i, ac); } } Question&Answers:os...

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

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c - Length of array in function argument

This is well known code to compute array length in C: sizeof(array)/sizeof(type) But I can't seem to find out ... if so, why is there the redundancy in main. Question&Answers:os...

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

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python - Saving an Object (Data persistence)

I've created an object like this: company1.name = 'banana' company1.value = 40 I would like to save this object. How can I do that? Question&Answers:os...

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

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sql - How do I (or can I) SELECT DISTINCT on multiple columns?

I need to retrieve all rows from a table where 2 columns combined are all different. So I want all the sales ... But my brain hurts going any farther than that. Question&Answers:os...

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

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Undo a Git merge that hasn't been pushed yet

Within my master branch, I did a git merge some-other-branch locally, but never pushed the changes to origin master. ... . How do I get back to that point? Question&Answers:os...

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

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c# - How do you create a dropdownlist from an enum in ASP.NET MVC?

I'm trying to use the Html.DropDownList extension method but can't figure out how to use it with an ... for loop and create the Html elements manually? Question&Answers:os...

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

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c# - All possible array initialization syntaxes

What are all the array initialization syntaxes that are possible with C#? Question&Answers:os...

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

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javascript - Generate unique random numbers between 1 and 100

How can I generate some unique random numbers between 1 and 100 using JavaScript? Question&Answers:os...

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

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scope - What's the correct way to communicate between controllers in AngularJS?

What's the correct way to communicate between controllers? I'm currently using a horrible fudge involving ... ; window.fetchStockSubgroups(prod_grp); } } Question&Answers:os...

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

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ios - Send and receive messages through NSNotificationCenter in Objective-C?

I am attempting to send and receive messages through NSNotificationCenter in Objective-C. However, I ... send and receive messages through NSNotificationCenter? Question&Answers:os...

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

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hash - C++ unordered_map using a custom class type as the key

I am trying to use a custom class as key for an unordered_map, like the following: #include <iostream> #include < ... do it. How can I accomplish this tasks? Question&Answers:os...

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

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What is "String args[]"? parameter in main method Java

I'm just beginning to write programs in Java. What does the following Java code mean? public static ... and/or examples are preferred over abstract explanations Question&Answers:os...

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

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c# - How would you count occurrences of a string (actually a char) within a string?

I am doing something where I realised I wanted to count how many /s I could find in a string, and then it ... .Replace(needle,"").Length ) / needle.Length; Question&Answers:os...

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

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c# - How can I detect the encoding/codepage of a text file

In our application, we receive text files (.txt, .csv, etc.) from diverse sources. When reading, these files ... up, ask the user to specify more text. Question&Answers:os...

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

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web scraping - retrieve links from web page using python and BeautifulSoup

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

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