大约有 40,000 项符合查询结果(耗时:0.0550秒) [XML]

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Python Create unix timestamp five minutes in the future

... Now in Python >= 3.3 you can just call the timestamp() method to get the timestamp as a float. import datetime current_time = datetime.datetime.now(datetime.timezone.utc) unix_timestamp = current_time.timestamp() # works if Python >= 3.3 unix_timestamp_pl...
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Getting the current page

...ewController: UIScrollViewDelegate { func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) { let width = scrollView.frame.width let page = Int(round(scrollView.contentOffset.x/width)) print("CurrentPage:\(page)") } } ...
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XPath to find elements that does not have an id or class

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mysqli or PDO - what are the pros and cons? [closed]

...nvincing somebody works better with a killer feature. So there it is: A really nice thing with PDO is you can fetch the data, injecting it automatically in an object. If you don't want to use an ORM (cause it's a just a quick script) but you do like object mapping, it's REALLY cool : class Student...
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Compiling Java 7 code via Maven

... Check the mvn script in your maven installation to see how it's building the command. Perhaps you or someone else has hard-coded a JAVA_HOME in there and forgotten about it. share ...
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When splitting an empty string in Python, why does split() return an empty list while split('\n') re

...ncorporates both splitting algorithms in the same tool. People seem to mentally model field-splitting as a single concept even though more than one algorithm is involved. share | improve this answer...
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How to search file text for a pattern and replace it with a given value

...ull. This code is not fit for anything beyond a quick one-off script where all the data is backed up. For that reason, do NOT copy this code into your programs. Here's a quick short way to do it. file_names = ['foo.txt', 'bar.txt'] file_names.each do |file_name| text = File.read(file_name) ne...
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What are bitwise shift (bit-shift) operators and how do they work?

...hift operator, and meets the needs of both logical and arithmetic shifts. All of these operators can be applied to integer values (int, long, possibly short and byte or char). In some languages, applying the shift operators to any datatype smaller than int automatically resizes the operand to be a...
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What is the difference between Directory.EnumerateFiles vs Directory.GetFiles?

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Sorting object property by values

...ou like, thus achieving exactly what you set out to do. That would work in all the browsers I know of, but it would be dependent on an implementation quirk, and could break at any time. You should never make assumptions about the order of elements in a JavaScript object. var objSorted = {} sortable....