大约有 30,000 项符合查询结果（耗时：0.0488秒） [XML]
Hide keyboard when scroll UITableView
...search about this in internet, and most answer is subclassing UITableView (http://stackoverflow.com/questions/3499810/tapping-a-uiscrollview-to-hide-the-keyboard).
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How do I fit an image (img) inside a div and keep the aspect ratio?
I have a 48x48 div and inside it there is an img element, I want to fit it into the div without losing any part, in the mean time the ratio is kept, is it achievable using html and css?
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python list in sql query as parameter
I have a python list, say l
15 Answers
15
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How to select rows with no matching entry in another table?
I'm doing some maintenance work on a database application and I've discovered that, joy of joys, even though values from one table are being used in the style of foreign keys, there's no foreign key constraints on the tables.
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How to format numbers? [duplicate]
...put change', function(){
inputs.keyup();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="dp" type="range" min="0" max="5" step="1" value="2" title="number of decimal places?" />
Now the other version, wit...
Escaping HTML strings with jQuery
...is is fun & stuff').html(); // "This is fun &amp; stuff"
Source: http://debuggable.com/posts/encode-html-entities-with-jquery:480f4dd6-13cc-4ce9-8071-4710cbdd56cb
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How to generate all permutations of a list?
...e just curious to know how it works, here's one nice approach, taken from http://code.activestate.com/recipes/252178/:
def all_perms(elements):
if len(elements) <=1:
yield elements
else:
for perm in all_perms(elements[1:]):
for i in range(len(elements)):
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How to remove trailing whitespace of all files recursively?
How can you remove all of the trailing whitespace of an entire project? Starting at a root directory, and removing the trailing whitespace from all files in all folders.
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Check existence of input argument in a Bash shell script
I need to check the existence of an input argument. I have the following script
11 Answers
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Validate that a string is a positive integer
...se
" " : false
"" : false
DEMO: http://jsfiddle.net/5UCy4/37/
Solution 2
Another way is good for all numeric values which are valid up to Number.MAX_VALUE, i.e. to about 1.7976931348623157e+308:
function isPositiveInteger(n) {
return 0 === n % (!is...