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css - Best Practices & Considerations when writing HTML Emails

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ssl - CFNetwork SSLHandshake failed iOS 9

has anyone with the iOS 9 beta 1 had this issue? I use standard NSURLConnection to ... :urlRequest returningResponse:&response error:&error]; Question&Answers:os...

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

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c++ - How do I add a linker or compile flag in a CMake file?

I am using the arm-linux-androideabi-g++ compiler. When I try to compile a simple "Hello, World!" ... CMAKE_C_FLAGS "fexceptions") It still displays an error. Question&Answers:os...

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

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javascript - jQuery: Get height of hidden element in jQuery

I need to get height of an element that is within a div that is hidden. Right now I show the div, get the ... can only get height if its visible $select.hide(); Question&Answers:os...

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

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html - CSS Display an Image Resized and Cropped

I want to show an image from an URL with a certain width and height even if it has a different size ratio. So I ... src="https://i.stack.imgur.com/wPh0S.jpg"> Question&Answers:os...

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

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debugging - How can I see the entire HTTP request that's being sent by my Python application?

In my case, I'm using the requests library to call PayPal's API over HTTPS. Unfortunately, I'm getting an ... request, headers included". How can I do that? Question&Answers:os...

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linux - Regex (grep) for multi-line search needed

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sql - How to use RETURNING with ON CONFLICT in PostgreSQL?

I have the following UPSERT in PostgreSQL 9.5: INSERT INTO chats ("user", "contact", "name") VALUES ($1, $2, ... columns. Can this be done? If so, how? Question&Answers:os...

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javascript - How to delete an item from state array?

The story is, I should be able to put Bob, Sally and Jack into a box. I can also remove either from ... might be doing something wrong since I'm using React. Question&Answers:os...

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Python initializing a list of lists

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

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java - Number of days between two dates in Joda-Time

How do I find the difference in Days between two Joda-Time DateTime instances? With difference in days' I mean if ... between 14:01 and 14:55 would be 0. Question&Answers:os...

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

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How to format strings in Java

Primitive question, but how do I format strings like this: "Step {1} of {2}" by substituting variables using Java? In C# it's easy. Question&Answers:os...

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python - Extract first item of each sublist

I am wondering what is the best way to extract the first item of each sublist in a list of lists and append it to a ... I tried: lst2.append(x[0] for x in lst) Question&Answers:os...

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How do I return multiple values from a function in C?

If I have a function that produces a result int and a result string, how do I return them both from a ... as determined by the type preceding the function name. Question&Answers:os...

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android - Environment.getExternalStorageDirectory() deprecated in API level 29 java

Working on android Java, recently updated SDK to API level 29 now there is a warning shown which states that ... } What will be the alternative for this? Question&Answers:os...

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

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php - Failed to connect to mailserver at "localhost" port 25

I keep getting this error when I try to send an e-mail in PHP: Warning: mail() [function.mail]: Failed to ... as a server.. What am I doing wrong? Thanks. Question&Answers:os...

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javascript - Does return stop a loop?

Suppose I have a loop like this: for (var i = 0; i < SomeArrayOfObject.length; i++) { if (SomeArray[i]. ... stop the execution of the loop in and of itself? Question&Answers:os...

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Can I perform a DNS lookup (hostname to IP address) using client-side Javascript?

I would like to use client-side Javascript to perform a DNS lookup (hostname to IP address) as seen from the client's computer. Is that possible? Question&Answers:os...

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

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CSS reset - What exactly does it do?

I found this reset.css file inside a jquery image slider demo, but it was never included in the main index.html file. ... :''; } abbr,acronym { border:0; } Question&Answers:os...

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oop - Preserving a reference to "this" in JavaScript prototype functions

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

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Database design - articles, blog posts, photos, stories

I'm designing a database for a web site that will have at least 4 different object types represented (articles, ... in mind, what would be the best approach? Question&Answers:os...

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

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C function syntax, parameter types declared after parameter list

I'm relatively new to C. I've come across a form of function syntax I've never seen before, where the parameter types ... argc; char *argv[]; { return(0); } Question&Answers:os...

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sqlite - cannot load such file -- sqlite3/sqlite3_native (LoadError) on ruby on rails

When I try to setup basic installation and initiation of server using Rails 4.0.0 on Ruby 2.0.0, I'm ... can I avoid this error message and proceed further? Question&Answers:os...

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

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php - calculate math expression from a string using eval

I want to calculate math expression from a string. I have read that the solution to this is to use eval(). ... 1 Does someone know the solution to this problem. Question&Answers:os...

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Interleave multiple lists of the same length in Python

In Python, is there a good way to interleave two lists of the same length? Say I'm given [1,2,3] and [10,20, ... like to transform those into [1,10,2,20,3,30]. Question&Answers:os...

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python - Removing elements that have consecutive duplicates

I was curios about the question: Eliminate consecutive duplicates of list elements, and how it should be implemented ... / more efficient way to implement this? Question&Answers:os...

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

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language agnostic - What is the difference between a framework and a library?

What is the difference between a framework and a library? I always thought of a library as a set of ... and which covers all areas of application development. Question&Answers:os...

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

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http - "CAUTION: provisional headers are shown" in Chrome debugger

I noticed a strange caution message when looking at downloaded resources using Google chrome inspector (F12): Caution ... message means and why I received it. Question&Answers:os...

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

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