大约有 8,000 项符合查询结果（耗时：0.0347秒） [XML]
CSS background opacity with rgba not working in IE 8
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@EugeneXa It's closer to 10% on my sites, and they're often good customers. There is no single right answer here. Do the math and figure out what works for you. Even 6% could be huge for some sites! No users deserve to be punished. I think you will regret that...
How to grant remote access to MySQL for a whole subnet?
... answered Jun 2 '16 at 12:55
site80443site80443
13133 silver badges66 bronze badges
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Can a C++ enum class have methods?
...is not what John Doe would consider a class, too. Yet they can have member functions. And classes are really not mandatory for member functions. Using a designator like value or this, something like enum Size { Huge, Mega, Apocalypse; bool operator<(X rhs) const { return *this < rhs; } (here a...
Haskell, Lisp, and verbosity [closed]
...:
almost anything you can do with macros you can do with a higher-order function (and I include monads, arrows, etc.), but it might require more thinking (but only the first time, and it's fun and you'll be a better programmer for it), and
the static system is sufficiently general that it never g...
How do I make a textbox that only accepts numbers?
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And just because it's always more fun to do stuff in one line...
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
e.Handled = !char.IsDigit(e.KeyChar) && !char.IsControl(e.KeyChar);
}
NOTE: This DOES NOT prevent...
Python Pandas: Get index of rows which column matches certain value
...ool (PS: about how to use it please check link )
df.query('BoolCol')
Out[123]:
BoolCol
10 True
40 True
50 True
After we filter the original df by the Boolean column we can pick the index .
df=df.query('BoolCol')
df.index
Out[125]: Int64Index([10, 40, 50], dtype='int64')
Als...
Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
...n):
model = Book
list_display = ['title', 'author__name', ]
admin.site.register(Book, BookAdmin)
admin.py (Correct Way) - this is how you reference a foreign key name the Django way
class BookAdmin(admin.ModelAdmin):
model = Book
list_display = ['title', 'get_name', ]
def g...
Using tags to turn off caching in all browsers? [duplicate]
...rs are unreliable in meta elements; for one,
any web proxies between the site and the user will completely ignore
them. You should always use a real HTTP header for headers such as
Cache-Control and Pragma.
share
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How to recursively download a folder via FTP on Linux [closed]
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123
Better use wget -m (--mirror). wget -r is limited to a recursion depth of 5 by default.
– asmaier
J...
What are the disadvantages of using persistent connection in PDO
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I know a big website that has been using persistent connections for nearly a decade now. The trick is using a layer above the DB extension, and having it remember the things that need to be cleaned up by using register_shutdown_function(). I...