大约有 48,000 项符合查询结果（耗时：0.0684秒） [XML]
Checking if a blob exists in Azure Storage
...exists in a particular container. I'll be downloading it if it does exist, and if it doesn't then I'll do something else.
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Python memoising/deferred lookup property decorator
...f the instance, but they're a real bottleneck to calculate that first time and only really accessed for special cases. Hence they can also be cached after they've been retrieved from the database (this therefore fits the definition of memoisation where the input is simply "no input").
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What's the point of const pointers?
...m not 100% sure about a const that you get passed in as a func var. thanks and sorry if this is off topic
– Tomer
Feb 4 '18 at 22:15
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Delete all lines beginning with a # from a file
...with comments in a file begin with # . How can I delete all of the lines (and only those lines) which begin with # ? Other lines containing # , but not at the beginning of the line should be ignored.
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Ternary Operator Similar To ?:
... answered Feb 9 '11 at 19:06
LandeiLandei
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Does java.util.List.isEmpty() check if the list itself is null? [duplicate]
...tionUtils.html#isEmpty(java.util.Collection)
which implements it quite ok and well documented:
/**
* Null-safe check if the specified collection is empty.
* <p>
* Null returns true.
*
* @param coll the collection to check, may be null
* @return true if empty or null
* @since Common...
How do I fetch a single model in Backbone?
... answered Feb 23 '11 at 21:57
Andrew De AndradeAndrew De Andrade
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How to execute multi-line statements within Python's own debugger (PDB)
... It seems the same can be achieved using the pdb interact command (as I learned from this bug tracker message).
– gerrit
Jun 11 '14 at 15:15
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How to darken a background using CSS?
...HOLE body. Is there any way I can just make the background-image darker, and not everything else?
8 Answers
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In what cases will HTTP_REFERER be empty
...e user changed it? Is getting an empty one the same as getting a null one? and under what circumstances do I get that too?
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