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html - When to use the !important property in CSS

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

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java - Why do these two multiplication operations give different results?

Why do I need to add an "L" letter to get the correct long value? And what is the ... .println(oneYearWithoutL)//gives incorrect calculation result: 1471228928 Question&Answers:os...

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

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What is short circuiting and how is it used when programming in Java?

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

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Arithmetic operator overloading for a generic class in C#

Given a generic class definition like public class ConstrainedNumber<T> : IEquatable<ConstrainedNumber<T>>, IEquatable<T ... 'where' constraint for such types? Question&Answers:os...

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

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Is there an easy way to convert a number to a word in PHP?

In PHP, is there an easy way to convert a number to a word? For instance, 27 to twenty-seven. Question&Answers:os...

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

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c - Is there any way to compute the width of an integer type at compile-time?

The size of an integer type (or any type) in units of char/bytes is easily computed as sizeof(type). A ... way to compute this value as a constant expression? Question&Answers:os...

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

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html - How to make this arrow in CSS only?

I'm building a wizard-like ordering process where I have this menu: The active page is colored green (in this case ... about how to do this, please let me know! Question&Answers:os...

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What does % do in JavaScript?

What does the % do in JavaScript? A definition of what it is and what it does would be much appreciated. Question&Answers:os...

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

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c - One-dimensional access to a multidimensional array: is it well-defined behaviour?

I imagine we all agree that it is considered idiomatic C to access a true multidimensional array by ... this is explicitly permitted by the standard. Question&Answers:os...

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rust - Deriving a trait results in unexpected compiler error, but the manual implementation works

This code (playground): #[derive(Clone)] struct Foo<'a, T: 'a> { t: &'a T, } fn bar<'a, T>(foo: ... Is this a compiler bug? Something else I didn't think of? Question&Answers:os...

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c# - update datagridview very frequently

I'm having trouble refreshing my DataGridView in a reasonable time in C# (which I am new to ... dataGrid.FirstDisplayedScrollingRowIndex = currentRow; } } } Question&Answers:os...

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gpgpu - CUDA limit seems to be reached, but what limit is that?

I have a CUDA program that seems to be hitting some sort of limit of some resource, but I can't figure out what ... 880M CUDA Version: 1.2 OS: Windows 7 64-bit Question&Answers:os...

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python - Why don't list operations return the resulting list?

I'm interested in the thought process that led to this. To me, a relative newbie, it seems hampering, ... deeper understanding of the language's design process. Question&Answers:os...

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

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OpenGL 3D-raypicking with high poly meshes

How to implement 3d raypicking in an 3d scene with models that contain high poly meshes? It takes too ... high poly models for real-time OpenGl applications? Question&Answers:os...

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ajax and php to enter multiple forms input to database

I have a php generated form with multiple input fields the number of which is determined by user select. I would like to use an ... '$email[$i]');"; $i++; } ?> Question&Answers:os...

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

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docker - What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?

What is the difference between the COPY and ADD commands in a Dockerfile, and when would I use one over the ... to the container's filesystem at path <dest>. Question&Answers:os...

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

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diff - How to compare a local Git branch with its remote branch

How can I see the diff between a local branch and a remote branch? Question&Answers:os...

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

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node.js - How to install a private NPM module without my own registry?

I've taken some shared code and put it in an NPM module, one I don't want to upload to the central ... even from git? npm install --from-git git@server:project Question&Answers:os...

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

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Enterprise app deployment doesn't work on iOS 7.1

We distribute apps via an Enterprise account, using an itms-services:// URL. This has always worked fine, but ... to suggest what could be causing the problem. Question&Answers:os...

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class - Why do we use __init__ in Python classes?

I am having trouble understanding the Initialization of classes. What's the point of them and how do we know ... don't understand the logic in creating them. Question&Answers:os...

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How do I prevent 'git diff' from using a pager?

Is there a command line switch to pass to git diff and other commands that use the less pager by default? I ... able to find one, going through the man pages. Question&Answers:os...

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

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python - Run function from the command line

I have this code: def hello(): return 'Hi :)' How would I run this directly from the command line? Question&Answers:os...

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

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javascript - Check if an element is present in an array

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mysql - Create a temporary table in a SELECT statement without a separate CREATE TABLE

Is it possible to create a temporary (session only) table from a select statement without using a create table ... the column list and type list matched up. Question&Answers:os...

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

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CSS Image size, how to fill, but not stretch?

I have an image, and I want to set it a specific width and height (in pixels) But If I set width and ... aspect ratio), and then, it cropped to 150x100. Question&Answers:os...

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

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css - How to add multiple font files for the same font?

I'm looking at the MDC page for the @font-face CSS rule, but I don't get one thing. I have separate ... all the different variants I have for a certain font? Question&Answers:os...

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How to install both Python 2.x and Python 3.x in Windows

I do most of my programming in Python 3.x on Windows 7, but now I need to use the Python Imaging Library (PIL) ... hours for how to do this to no avail. Thanks. Question&Answers:os...

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

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.net - Associating enums with strings in C#

I know the following is not possible because the Enumeration's type has to be an int enum GroupTypes { TheGroup = " ... be terse. What other options do I have? Question&Answers:os...

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

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