大约有 15,000 项符合查询结果（耗时：0.0225秒） [XML]
How to continue a task when Fabric receives an error
...task to run on several remote servers, if the task runs on server one and exits with an error, Fabric will stop and abort the task. But I want to make fabric ignore the error and run the task on the next server. How can I make it do this?
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How to determine why visual studio might be skipping projects when building a solution
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How to get function parameter names/values dynamically?
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Does JavaScript have “Short-circuit” evaluation?
..., your first instinct is probably to say: 'Ah yes, quite simple, the code executes the statement if both expr1 and expr2 are evaluated as true'
Well, yes and no. You are technically correct, that is the behaviour you described, but that's not exactly how the code is evaluated and we'll need to delv...
SQL - find records from one table which don't exist in another
...k)
alternatively (thanks to Alterlife)
SELECT *
FROM Call
WHERE NOT EXISTS
(SELECT *
FROM Phone_book
WHERE Phone_book.phone_number = Call.phone_number)
or (thanks to WOPR)
SELECT *
FROM Call
LEFT OUTER JOIN Phone_Book
ON (Call.phone_number = Phone_book.phone_number)
WHERE ...
Array.push() if does not exist?
How can I push into an array if neither values exist? Here is my array:
23 Answers
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How to do URL decoding in Java?
...r.decode(url, StandardCharsets.UTF_8.name());
} catch (UnsupportedEncodingException e) {
// not going to happen - value came from JDK's own StandardCharsets
}
Java 10 added direct support for Charset to the API, meaning there's no need to catch UnsupportedEncodingException:
String result = ja...
How to change a module variable from another module?
...to import bar.py directly with import bar in __init__.py and conduct your experiment there by setting bar.a = 1. This way, you will actually be modifying bar.__dict__['a'] which is the 'real' value of a in this context.
It's a little convoluted with three layers but bar.a = 1 changes the value of a...
Cleanest way to get last item from Python iterator
...the best way of getting the last item from an iterator in Python 2.6? For example, say
14 Answers
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Accurate way to measure execution times of php scripts
I want to know how many milliseconds a PHP for-loop takes to execute.
14 Answers
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