大约有 40,000 项符合查询结果(耗时:0.0647秒) [XML]

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Why is it slower to iterate over a small string than a small list?

... overhead that isn't iteration). This removes the building of the iterable by pre-assigning it: >>> python3 -m timeit -s 'iterable = "abc"' '[x for x in iterable]' 1000000 loops, best of 3: 0.387 usec per loop >>> python3 -m timeit -s 'iterable = ["a", "b", "c"]' '[x fo...
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How can I convert a Unix timestamp to DateTime and vice versa?

... Time in Windows is handled by HAL and only close-to-accurate within 1ms to 15ms. More info is available in Windows Internals around page 112, if anyone is interested. – Jim Schubert Apr 13 '12 at 14:59 ...
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JavaScript - get the first day of the week from current date

... by the way, d.setDate is mutable, it changes the "d" itself – Ayyash Dec 13 '18 at 8:55 ...
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Using CSS td width absolute, position

...sed on the width of the entire table. You can get around this easily just by having a display: block element inside of the table cell itself whose width you specify, e.g <td><div style="width: 300px;">wide</div></td> This shouldn't make much of a difference if the <tab...
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Search an Oracle database for tables with specific column names?

...tab_columns where column_name in ('ID', 'FNAME', 'LNAME', 'ADDRESS') group by owner, table_name having count(*) = 4; share | improve this answer | follow | ...
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How to import other Python files?

...port file without the '.py' extension. You can mark a folder as a package, by adding an empty file named __init__.py. You can use the __import__ function. It takes the module name as a string. (Again: module name without the '.py' extension.) pmName = input('Enter module name:') pm = __import__(pmN...
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Bash, no-arguments warning, and case decisions

...o the number of positional parameters in decimal." It is likewise mandated by POSIX as described in pubs.opengroup.org/onlinepubs/9699919799/utilities/… – eschwartz Mar 20 '19 at 2:00 ...
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Is there a W3C valid way to disable autocomplete in a HTML form?

... The missing value default is the on state. The off state indicates that by default, form controls in the form will have their autofill field name set to off; the on state indicates that by default, form controls in the form will have their autofill field name set to "on". Reference: W3 ...
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android edittext onchange listener

... setContentView(R.layout.main); yourEditText = (EditText) findViewById(R.id.yourEditTextId); yourEditText.addTextChangedListener(new TextWatcher() { public void afterTextChanged(Editable s) { // you can call or do what you want with your EditText here ...
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Differences between Emacs and Vim

...had to try several times to get it right. – HelloGoodbye Jun 30 '15 at 21:39 10 Never underestima...