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When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...ect of a class that overloads operator-> (common such types are smart pointers and iterators), then the meaning is whatever the class designer implemented. To conclude: With a->b, if a is a pointer, b will be a member of the object the pointer a refers to. If, however, a is an object of a clas...
Modify alpha opacity of LESS variable
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Thanks! I've been getting tired of converting everything to RGBA!
– BillyNair
Jun 19 '13 at 1:47
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Is it better to use std::memcpy() or std::copy() in terms to performance?
... of its information. When you call std::copy, the function keeps the types intact. memcpy operates on void *, which discards almost all useful information. For instance, if I pass in an array of std::uint64_t, the compiler or library implementer may be able to take advantage of 64-bit alignment with...
What permission do I need to access Internet from an Android application?
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Add the INTERNET permission to your manifest file.
You have to add this line:
<uses-permission android:name="android.permission.INTERNET" />
outside the application tag in your AndroidManifest.xml
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Display HTML snippets in HTML
...+ with extension 'TextFX'. Mark the text, go to menu >TextFX >TextFX Convert >Encode HTML (&<>") → Done.
– Kai Noack
Jan 13 '13 at 18:07
2
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How to use wait and notify in Java without IllegalMonitorStateException?
I have 2 matrices and I need to multiply them and then print the results of each cell. As soon as one cell is ready I need to print it, but for example I need to print the [0][0] cell before cell [2][0] even if the result of [2][0] is ready first. So I need to print it by order.
So my idea is to mak...
How do I programmatically change file permissions?
... main(String[] args) {
libc.chmod("/path/to/file", 0755);
}
}
interface CLibrary extends Library {
public int chmod(String path, int mode);
}
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Get file name and extension in Ruby
I'm working on a program to download a video from YouTube, convert it to MP3 and create a directory structure for the files.
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Difference between getContext() , getApplicationContext() , getBaseContext() and “this”
...xt including code to access resources (e.g. openFileInput(), getString()), interact with other components (e.g. sendBroadcast(), registerReceiver()), requests permissions (e.g. checkCallingOrSelfPermission()) and resolving file system locations (e.g. getFilesDir()). ContextWrapper is really useful t...
What's a 3D doing in this HTML?
... should use =, not =3D). :-) If your email software needs to use QP, it'll convert automatically.
– Chris Jester-Young
Oct 25 '10 at 15:48
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