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“R cannot be resolved to a variable”? [duplicate]
In Eclipse, I've created a project from a source and now it shows errors - "R cannot be resolved to a variable". From what I found here, I had cleared and rebuilt the project, but still the R file doesn't appear in the /gen folder.
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How can I sanitize user input with PHP?
...invalid UTF-8 sequences all over your application (you might get different error recovery depending on code path), and UTF-8 can be filtered (or rejected) easily.
– Kornel
Sep 9 '09 at 21:33
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What is the __del__ method, How to call it?
... than complicated.
Special cases aren't special enough to break the rules.
Errors should never pass silently.
In the face of ambiguity, refuse the temptation to guess.
There should be one – and preferably only one – obvious way to do it.
If the implementation is hard to explain, it's a bad idea....
How do I export UIImage array as a movie?
...s to a video stream. Essentially you’ll have to:
1) Wire the writer:
NSError *error = nil;
AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL:
[NSURL fileURLWithPath:somePath] fileType:AVFileTypeQuickTimeMovie
error:&error];
NSParameterAssert(videoWriter);
NSDictionary ...
Disable single warning error
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Example:
#pragma warning(suppress:0000) // (suppress one error in the next line)
This pragma is valid for C++ starting with Visual Studio 2005.
https://msdn.microsoft.com/en-us/library/2c8f766e(v=vs.80).aspx
The pragma is NOT valid for C# through Visual Studio 2005 through Visua...
How to check if a file exists in Go?
... between checking and opening, and anyway you'll need to check the os.Open error regardless. So you simply call os.IsNotExist(err) after you try
to open the file, and deal with its non-existence there (if that requires special handling).
[...] You don't need to check for the paths existing ...
Python locale error: unsupported locale setting
Why do I get the following error when doing this in python:
20 Answers
20
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Can I do a synchronous request with volley?
...t(String url, JSONObject jsonRequest, Listener<JSONObject> listener, ErrorListener errorlistener) constructor. RequestFuture<JSONObject> implements both the Listener<JSONObject> and ErrorListener interfaces, so it can be used as the last two parameters.
– Matt...
What does “use strict” do in JavaScript, and what is the reasoning behind it?
...my JavaScript code through Crockford's JSLint , and it gave the following error:
28 Answers
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how to prevent “directory already exists error” in a makefile when using mkdir
...y in my makefile and I would like to not get the "directory already exists error" over and over even though I can easily ignore it.
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