大约有 16,000 项符合查询结果（耗时：0.0397秒） [XML]
Fastest way to count exact number of rows in a very large table?
I have come across articles that state that SELECT COUNT(*) FROM TABLE_NAME will be slow when the table has lots of rows and lots of columns.
...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
How do I install GCC (the GNU Compiler Collection) piece by piece, using the current version,
using the correct versions of dependencies, not using a package manager (like yum, rpm, apt, dpkg), and not using shared libraries?
...
How to create a new database after initally installing oracle database 11g Express Edition?
I have installed Oracle Database 11g Express Edition on my pc (windows 7)
and I have installed Oracle SQL Developer as well.
...
How do I get a class instance of generic type T?
...> . In a method of Foo , I want to get the class instance of type T , but I just can't call T.class .
21 Answers
...
how to unit test file upload in django
...
From Django docs on Client.post:
Submitting files is a special case. To POST a file, you need only
provide the file field name as a key, and a file handle to the file
you wish to upload as a value. For example:
c = Client()
with open('wishlist.doc') as f...
Expanding tuples into arguments
...tly what you request. The * operator simply unpacks the tuple (or any iterable) and passes them as the positional arguments to the function. Read more about unpacking arguments.
share
|
improve this...
Does Python have a string 'contains' substring method?
...
You can use the in operator:
if "blah" not in somestring:
continue
share
|
improve this answer
|
follow
|
...
Can someone explain the “debounce” function in Javascript
I am interested in the "debouncing" function in javascript, written here : http://davidwalsh.name/javascript-debounce-function
...
Using the HTML5 “required” attribute for a group of checkboxes?
When using the newer browsers that support HTML5 (FireFox 4 for example);
and a form field has the attribute required='required' ;
and the form field is empty/blank;
and the submit button is clicked;
the browsers detects that the "required" field is empty and does not submit the form; ins...
When would you use the Builder Pattern? [closed]
What are some common , real world examples of using the Builder Pattern? What does it buy you? Why not just use a Factory Pattern?
...