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How to open emacs inside bash
I'm using Ubuntu 11.10. When I type command "emacs" in terminal, it opens emacs as a seperate window. How can I open it inside the terminal, like nano editor?
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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
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From the Qt documentation:
The Meta-Object Compiler, moc, is the
program that handles Qt's C++
extensions.
The moc tool reads a C++ header file.
If it finds one or more class
declarations that contain the Q_OBJECT
macro, it produces a C++ source file
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typedef fixed length array
...t in a code sample. I put typedef char[3] type24; in my header file. The compiler did not complain about it. But when I defined a function void foo(type24 val) {} in my C file, it did complain. I would like to be able to define functions like type24_to_int32(type24 val) instead of type24_to_i...
Significance of a .inl file in C++
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.inl files are never mandatory and have no special significance to the compiler. It's just a way of structuring your code that provides a hint to the humans that might read it.
I use .inl files in two cases:
For definitions of inline functions.
For definitions of function templates.
In bot...
Create a tar.xz in one command
I am trying to create a .tar.xz compressed archive in one command. What is the specific syntax for that?
5 Answers
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Any difference between First Class Function and High Order Function
...ring to a function, such as “a first-class function”. It’s much more common to say that “a language has/hasn’t first-class function support”.
The two things are closely related, as it’s hard to imagine a language with first-class functions that would not also support higher-order func...
Equivalent of varchar(max) in MySQL?
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Get The Current Domain Name With Javascript (Not the path, etc.)
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This also returns the server name ('www.amazingjokes.com', instead of just '.amazingjokes.com')
– patrick
May 18 '16 at 13:22
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What is the purpose of setting a key in data.table?
...data.table to be reordered just to add/update column(s). For example,
## compare
setkey(X, a, b) # why physically reorder X to just add/update a column?
X[Y, col := i.val]
## to
X[Y, col := i.val, on=c("a", "b")]
In the second case, we did not have to reorder. It's not computing the order that...