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How do you use String.substringWithRange? (or, how do Ranges work in Swift?)

I have not yet been able to figure out how to get a substring of a String in Swift: var str = Hello ... x = str.substringWithRange(NSMakeRange(0, 3)) Thoughts? Question&Answers:os...

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android - FloatingActionButton example with Support Library

Recently, I read these posts: Android Design Support Library Android Support Library, revision 22.2.0 ... another answer. See my answer below. Question&Answers:os...

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

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CSS transition effect makes image blurry / moves image 1px, in Chrome?

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

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Return value in a Bash function

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

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

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sql server - How to calculate percentage with a SQL statement

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jQuery ajax error function

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

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ios - How do you find out the type of an object (in Swift)?

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

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http - Node.js EACCES error when listening on most ports

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javascript - What's the recommended way to extend AngularJS controllers?

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How to crop circular area from bitmap in Android

I have a bitmap and I want to crop a circular region from this bitmap. All pixels outside the circle should be transparent. How can I do this? Question&Answers:os...

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Reference: Comparing PHP's print and echo

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How to create a library project in Android Studio and an application project that uses the library project

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Python group by

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

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ios - How to have stored properties in Swift, the same way I had on Objective-C?

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xml - Getting attribute using XPath

Given an XML structure like so: <?xml version="1.0" encoding="ISO-8859-1"?> <bookstore> <book> <title lang=" ... is eng in book title), for the first element? Question&Answers:os...

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ios - Duplicate symbols for architecture x86_64 under Xcode

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

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http - Easy way to test a URL for 404 in PHP?

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

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signal processing - An implementation of the fast Fourier transform (FFT) in C#

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

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uuid - How to preserve identifierForVendor in ios after uninstalling ios app on device?

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What is the difference between square brackets and parentheses in a regex?

Here is a regular expression I created to use in JavaScript: var reg_num = /^(7|8|9)d{9}$/ Here is another one ... number is supposed to be any of 7, 8 or 9. Question&Answers:os...

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

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module - What does a . in an import statement in Python mean?

I'm looking over the code for Python's multiprocessing module, and it contains this line: from ._multiprocessing ... What does that mean? Why the period? Question&Answers:os...

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

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sql server - Order Of Execution of the SQL query

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android - launch sms application with an intent

I have a question about an intent... I try to launch the sms app... Intent intent = new Intent(Intent.ACTION_MAIN); ... don't know how I can do... Thank's Question&Answers:os...

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

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TypeScript "this" scoping issue when called in jquery callback

I'm not sure of the best approach for handling scoping of "this" in TypeScript. Here's an example of a common ... this.status); } } Is that a valid approach? Question&Answers:os...

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

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wordpress - Nginx serves .php files as downloads, instead of executing them

I am installing a website in a droplet (Digital Ocean). I have a issue for install NGINX with PHP properly. I did ... } ... Others "location" are commented... . Question&Answers:os...

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

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module - Execution of Python code with -m option or not

The python interpreter has -m module option that "Runs library module module as a script". With this python code a. ... of the main script". 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 - Difference between textContent vs innerText

What is the difference between textContent and innerText in JavaScript? Can I use textContent as follows: var logo$ = ... )[0]; logo$.textContent = "Example"; Question&Answers:os...

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

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