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I have a Node.js app hosted on Heroku. Every time I do a git push heroku I get the following error: ... master -> master (pre-receive hook declined) before. Question&Answers:os...

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

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ios - Request failed: unacceptable content-type: text/html using AFNetworking 2.0

I'm trying out the new version 2.0 of AFNetworking and I'm getting the error above. Any idea why this ... the JSON using kJSONlink. This should return a JSON. Question&Answers:os...

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

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542 views

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.net - In C#, how to check if a TCP port is available?

In C# to use a TcpClient or generally to connect to a socket how can I first check if a certain port is free on ... port is free. c = new TcpClient(ip, port); Question&Answers:os...

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

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javascript - Functions that return a function

I'm stuck with this concept of 'Functions that return functions'. I'm referring the book 'Object Oriented Javascript' by Stoyan ... = a(); alert('break'); s(); Question&Answers:os...

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

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javascript - How to include js file in another js file?

This question already has answers here: Question&Answers:os...

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

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ruby on rails - What is the easiest way to duplicate an activerecord record?

I want to make a copy of an ActiveRecord object, changing a single field in the process (in addition to the ... like this: new_record = Record.copy(:id) Question&Answers:os...

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

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sql - How important is the order of columns in indexes?

I've heard that you should put columns that will be the most selective at the beginning of the index ... existing index and calling it good. Thoughts? Question&Answers:os...

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

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r - Applying a function to every row of a table using dplyr?

When working with plyr I often found it useful to use adply for scalar functions that I have to apply to each and every row. e. ... 6 5.4 3.9 1.7 0.4 setosa 7.9 Question&Answers:os...

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

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python - How do I get the different parts of a Flask request's url?

I want to detect if the request came from the localhost:5000 or foo.herokuapp.com host and what path was ... I get this information about a Flask request? Question&Answers:os...

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

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How can I decompress a gzip stream with zlib?

Gzip format files (created with the gzip program, for example) use the "deflate" compression algorithm, which is the ... I use zlib to decompress a gzip file? Question&Answers:os...

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

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Ruby: How to post a file via HTTP as multipart/form-data?

I want to do an HTTP POST that looks like an HMTL form posted from a browser. Specifically, post some text fields ... like the best idea. curb is looking good. Question&Answers:os...

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

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Android: Bitmaps loaded from gallery are rotated in ImageView

When I load an image from the media gallery into a Bitmap, everything is working fine, except that pictures that were ... that and how can I load it correctly? Question&Answers:os...

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

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Deep copy of a dict in python

I would like to make a deep copy of a dict in python. Unfortunately the .deepcopy() method doesn't exist ... The solution should be compatible with Python 3.x. Question&Answers:os...

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

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c# - What's the difference between SortedList and SortedDictionary?

Is there any real practical difference between a SortedList<TKey,TValue> and a SortedDictionary<TKey,TValue>? Are ... specifically use one and not the other? Question&Answers:os...

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

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regex - Difference between A z and ^ $ in Ruby regular expressions

In the documentation I read: Use A and z to match the start and end of the string, ^ and $ match the start/end ... the difference: I've always used ^ and $ ... Question&Answers:os...

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

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c++ - undefined reference to 'std::cout'

Shall this be the example: #include <iostream> using namespace std; int main() { cout << "Hola, moondo. "; } It ... [qs] Error 1 Note: I am using Debian Wheezy. Question&Answers:os...

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

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obfuscation - Is it possible to decompile an Android .apk file?

Are the users able to convert the apk file of my application back to the actual code? If they do - is there any way to prevent this? Question&Answers:os...

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

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What is the difference between a language construct and a "built-in" function in PHP?

I know that include, isset, require, print, echo, and some others are not functions but language constructs. ... a language construct and a built-in function? Question&Answers:os...

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

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bash - How can I remove the extension of a filename in a shell script?

What's wrong with the following code? name='$filename | cut -f1 -d'.'' As is, I get the literal ... is assign to a variable the filename without the extension. Question&Answers:os...

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

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security - When would I need a SecureString in .NET?

I'm trying to grok the purpose of .NET's SecureString. From MSDN: An instance of the System.String class is ... (c); What aspect of SecureString am I missing? Question&Answers:os...

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

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317 views

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iphone - Check if URL scheme is supported in javascript

Is there any way to check if a URL scheme is currently registered on the phone... with javascript? Question&Answers:os...

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

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102 views

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How to get nth jQuery element

In jQuery, $("...").get(3) returns the 3rd DOM element. What is the function to return the 3rd jQuery element? Question&Answers:os...

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

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567 views

1 answer

reactjs - What is the best way to access redux store outside a react component?

@connect works great when I'm trying to access the store within a react component. But how should I access ... } Any insights or workflow patterns out there? Question&Answers:os...

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

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723 views

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java - How to read .pem file to get private and public key

I am writing a small piece of code which reads public and private key stored in .pem file. I am using ... am not making sense somewhere then please point out. Question&Answers:os...

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

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143 views

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java - Android download binary file problems

I am having problems downloading a binary file (video) in my app from the internet. In Quicktime, If I download it directly ... { f.write(buffer); } f.close(); Question&Answers:os...

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

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76 views

1 answer

How do I pass a method as a parameter in Python

Is it possible to pass a method as a parameter to a method? self.method2(self.method1) def method1(self ... ): result = methodToRun.call() return result Question&Answers:os...

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

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156 views

1 answer

html - How do I get the information from a meta tag with JavaScript?

The information I need is in a meta tag. How can I access the "content" data of the meta tag when property=" ... " content="http://video.com/video33353.mp4" /> Question&Answers:os...

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

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118 views

1 answer

javascript - Easy to understand definition of "asynchronous event"?

Closed. This question is opinion-based. It is not currently accepting answers. Question&Answers:os...

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

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