大约有 22,000 项符合查询结果（耗时：0.0377秒） [XML]
Django. Override save for model
...
You may supply extra argument for confirming a new image is posted.
Something like:
def save(self, new_image=False, *args, **kwargs):
if new_image:
small=rescale_image(self.image,width=100,height=100)
self.image_small=S...
Quick Sort Vs Merge Sort [duplicate]
...deed. Both explanation and simple implementations.
– extraneon
Apr 8 '10 at 8:05
1
@Stephan Egger...
Design Patterns web based applications [closed]
... try {
Action action = ActionFactory.getAction(request);
String view = action.execute(request, response);
if (view.equals(request.getPathInfo().substring(1)) {
request.getRequestDispatcher("/WEB-INF/" + view + ".jsp").forward(request, response);
}
...
How to convert current date into string in java?
How do I convert the current date into string in Java?
9 Answers
9
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Quickly reading very large tables as dataframes
...ontain any column headers or row names, and does not have any pathological characters that I have to worry about.
11 Answer...
How do I find the width & height of a terminal window?
... wrapper for that. E.g in Perl you can use Term::Size:
use Term::Size qw( chars );
my ( $columns, $rows ) = chars \*STDOUT;
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Disable individual Python unit tests temporarily
...-excursion
(beginning-of-line)
(search-forward "def")
(forward-char)
(if (looking-at "disable_")
(zap-to-char 1 ?_)
(insert "disable_"))))
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How to make unicode string with python3
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Literal strings are unicode by default in Python3.
Assuming that text is a bytes object, just use text.decode('utf-8')
unicode of Python2 is equivalent to str in Python3, so you can also write:
str(text, 'utf-8')
if you prefer.
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What are the Ruby Gotchas a newbie should be warned about? [closed]
...onvention — for example, regular-expression searches — return numbers, strings, lists, or other non-false values on success, but nil on failure (e.g., mismatch). This convention is also used in Smalltalk, where only the special objects true and false can be used in a boolean expression.
Versions...
Avoiding if statement inside a for loop?
... f(index++, e);
}
int main() {
using namespace std;
set<char> s{'b', 'a', 'c'};
// indices starting at 1 instead of 0
for_each_indexed(s, [](size_t i, char e) { cout<<i<<'\t'<<e<<'\n'; }, 1u);
cout << "-----" << endl;
vecto...