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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
... answered Jul 25 '09 at 13:32
Daniel C. SobralDaniel C. Sobral
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Difference between \w and \b regular expression meta characters
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I disagree at \b meaning the same as (\W|^|$), since (\W|^|$) will include the non-word character inside the matching result. You can check this fact here => regexr.com/3qf98 .
– Victor
Jun 4 '18 at 0:5...
Echo a blank (empty) line to the console from a Windows batch file [duplicate]
...do with accessing the file system. (Perhaps because : and \ have special meaning in a Windows file system path?)
However, some may consider these to be safe options since : and \ cannot appear in a file name. For that or another reason, echo: is recommended by SS64.com here.
echo(
echo+
echo,
ec...
Check if a class has a member function of a given signature
...lt;type_traits>
// Primary template with a static assertion
// for a meaningful error message
// if it ever gets instantiated.
// We could leave it undefined if we didn't care.
template<typename, typename T>
struct has_serialize {
static_assert(
std::integral_constant<T, fa...
Docker - a way to give access to a host USB or serial device?
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Is there any mechanism like this for the Windows docker client?
– Pascal
May 17 '16 at 11:07
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Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
I'm just getting started learning SQLite . It would be nice to be able to see the details for a table, like MySQL's DESCRIBE [table] . PRAGMA table_info [table] isn't good enough, as it only has basic information (for example, it doesn't show if a column is a field of some sort or not). Does SQL...
What is (functional) reactive programming?
...l for FRP, you could start with the old Fran tutorial from 1998, which has animated illustrations. For papers, start with Functional Reactive Animation and then follow up on links on the publications link on my home page and the FRP link on the Haskell wiki.
Personally, I like to think about what ...
Is a colon `:` safe for friendly-URL use?
We are designing a URL system that will specify application sections as words separated by slashes. Specifically, this is in GWT, so the relevant parts of the URL will be in the hash (which will be interpreted by a controller layer on the client-side):
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In plain English, what does “git reset” do?
...it was before the bad merge. You'll usually use it as git reset --merge (meaning git reset --merge HEAD) because you only want to reset away the merge, not actually move the branch. (HEAD hasn't been updated yet, since the merge failed)
To be more concrete, suppose you've modified files A and B, an...
Multiline Comment Workarounds?
I (sort of) already know the answer to this question. But I figured it is one that gets asked so frequently on the R Users list, that there should be one solid good answer. To the best of my knowledge there is no multiline comment functionality in R. So, does anyone have any good workarounds?
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