大约有 40,000 项符合查询结果(耗时:0.0636秒) [XML]

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Should I use px or rem value units in my CSS? [closed]

...u have to press Alt, and go to View, Text Size.) It's much easier to just select the Zoom option in the browser's main menu (or use Ctrl++/-/mouse wheel). 1 - within statistical error, naturally If we assume most users scale pages using the zoom option, I find relative units mostly irrelevant. I...
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When is it appropriate to use UDP instead of TCP? [closed]

... I just now ran a test out of curiosity. The test read 1 million records (select * from sometable). I set the number of records to return with each individual client request to be 1, 10, and then 100 (three test runs with each protocol). The server was only two hops away over a 100Mbit LAN. The ...
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How do I replace NA values with zeros in an R dataframe?

... mutate(myCol1 = if_else(is.na(myCol1), 0, myCol1)) Note: This works per selected column, if we need to do this for all column, see @reidjax's answer using mutate_each. share | improve this answer...
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Why shouldn't all functions be async by default?

...eason to make all methods async if they are not needed to - extensibility. Selective making methods async only works if your code never evolves and you know that method A() is always CPU-bound (you keep it sync) and method B() is always I/O bound (you mark it async). But what if things change? Yes,...
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What is the best project structure for a Python application? [closed]

...se in your projects. (Slight wrinkle: since on Windows, the interpreter is selected by the file extension, your Windows users actually do want the .py extension. So, when you package for Windows, you may want to add it. Unfortunately there's no easy distutils trick that I know of to automate this pr...
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What is the smallest possible valid PDF?

... This will not work, you need to define a font resource and select it inside the page content for the text to show up. – yms Aug 21 '15 at 20:36 ...
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What is the main difference between PATCH and PUT request?

...es. http patch method is like a UPDATE query in SQL which sets or updates selected columns only and not the whole row. Example: You could use PATCH method to update order status. PATCH /api/users/40450236/order/10234557 Request Body: {status: 'Delivered'} ...
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How to trigger a file download when clicking an HTML button or JavaScript

... @NicholasKyriakides Kind of reminds me of this gem: image.ibb.co/dtkUWJ/Selection_002.png – Stefanos Chrs May 17 '18 at 14:07 ...
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App Inventor 2 中的响应式设计 · App Inventor 2 中文网

...o change the Screen.Sizing property, on the Designer screen with Screen1 selected in Components, go to Properties on the right-hand side of the App Inventor. You will find a box below “Sizing” that usually defaults to Fixed, located about 2/3 down. This property is set project-wide. When si...
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Simulator or Emulator? What is the difference?

...e than it is. This comparison of both terms will contradict the currently selected answer (from Toybuilder) which puts the difference on the internal model, while my suggestion is that the difference is whether the fake can or cannot be used to perform the actual function in the actual world (to so...