大约有 31,840 项符合查询结果（耗时：0.0512秒） [XML]
How to extract numbers from a string and get an array of ints?
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[ and ] delimites a set of characters to be single matched, i.e., only one time in any order
^ Special identifier used in the beginning of the set, used to indicate to match all characters not present in the delimited set, instead of all characters present in the set.
+ Between one and unlimited...
Understanding checked vs unchecked exceptions in Java
...e exception. If an exception occurs in most of the cases you should choose one of these:
log it and return
rethrow it (declare it to be thrown by the method)
construct a new exception by passing the current one in constructor
Now, couldn't the above code also be a checked exception? I can try t...
How do I use itertools.groupby()?
... itertools usually clicks for me, but I also had a 'block' for this one. I appreciated your examples-- far clearer than docs. I think itertools tend to either click or not, and are much easier to grasp if you happen to have hit similar problems. Haven't needed this one in the wild yet.
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...ropagates all errors at once. With the multiple awaits, you lose errors if one of the earlier awaits throws.
Another important difference is that WhenAll will wait for all tasks to complete even in the presence of failures (faulted or canceled tasks). Awaiting manually in sequence would cause unexp...
How to concatenate a std::string and an int?
...TLSoft (header-only); most/all platforms
safe-ish (you don't use more than one int_to_string() call in a single statement), fast; requires STLSoft (header-only); Windows-only
is safe, but slow; requires Poco C++ ; most/all platforms
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Simplest way to do a fire and forget method in C#?
I saw in WCF they have the [OperationContract(IsOneWay = true)] attribute. But WCF seems kind of slow and heavy just to do create a nonblocking function. Ideally there would be something like static void nonblocking MethodFoo(){} , but I don't think that exists.
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Get the size of the screen, current web page and browser window
...et window width" and the content of this answer was on Google. A big minus one from me.
– Maciej Krawczyk
Jun 11 '16 at 7:43
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Web Service vs WCF Service
...se it gives the flexibility and scalibility for future use. There is only one exception: if the client doesn't support communication with wcf services i.e. Flash AS2.
– Lalit
Apr 21 '10 at 10:53
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SQLAlchemy: print the actual query
...pecific dialect or engine, if the statement itself is not already bound to one you can pass this in to compile():
print(statement.compile(someengine))
or without an engine:
from sqlalchemy.dialects import postgresql
print(statement.compile(dialect=postgresql.dialect()))
When given an ORM Query obj...
How to format a string as a telephone number in C#
I have a string "1112224444' it is a telephone number. I want to format as 111-222-4444 before I store it in a file. It is on a datarecord and I would prefer to be able to do this without assigning a new variable.
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