大约有 12,000 项符合查询结果（耗时：0.0449秒） [XML]
“unpacking” a tuple to call a matching function pointer
...S> struct gens<0, S...>{ typedef seq<S...> type; };
double foo(int x, float y, double z)
{
return x + y + z;
}
template <typename ...Args>
struct save_it_for_later
{
std::tuple<Args...> params;
double (*func)(Args...);
double delayed_dispatch()
{
return ca...
Create dynamic URLs in Flask with url_for()
...
It takes keyword arguments for the variables:
url_for('add', variable=foo)
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How do I wrap link_to around some html ruby code?
...
For older Rails versions, you can use
<% content_tag(:a, :href => foo_path) do %>
<span>Foo</span>
<% end %>
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Escape double quotes in a string
...g character " to the string.
What problem is that? You can't type string foo = "Foo"bar"";, because that'll invoke a compile error. As for the adding part, in string size terms that is not true:
@"""".Length == "\"".Length == 1
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Default string initialization: NULL or Empty? [closed]
... a lot:
string name = null; // or String.Empty
if (condition)
{
name = "foo";
}
else
{
name = "bar";
}
return name;
Not initializing to null would be just as effective. Furthermore, most often you want a value to be assigned. By initializing to null, you can potentially miss code paths that ...
Vim: Creating parent directories on save
If I invoke vim foo/bar/somefile but foo/bar don't already exist, Vim refuses to save.
6 Answers
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How to write loop in a Makefile?
... itself, this is generally what you want to happen anyway.
SOMESTRING = foo
# will error. Comment out and re-run
SOMESTRING = pre-${SOMESTRING}
# works
$(eval SOMESTRING = pre${SOMESTRING}
default:
@echo ${SOMESTRING}
Happy make'ing.
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git add remote branch
...al_branch>
Here's an example for a fictitious remote repository named foo with a branch named bar where I create a local branch bar tracking the remote:
git fetch foo bar:bar
git checkout bar
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Check if object is file-like in Python
...his is often useful, even in python. In general, when someone asks "how to foo", "don't foo" is not a highly satisfactory answer.
– AdamC
Oct 23 '15 at 19:13
1
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Git command to show which specific files are ignored by .gitignore
...at Documentation/.gitignore
# ignore generated html files,
*.html
# except foo.html which is maintained by hand
!foo.html
$ git ls-files --ignored \
--exclude='Documentation/*.[0-9]' \
--exclude-from=.git/ignore \
--exclude-per-directory=.gitignore
Actually, in my 'gitignore' file (c...