大约有 10,158 项符合查询结果（耗时：0.0285秒） [XML]
Copy file or directories recursively in Python
Python seems to have functions for copying files (e.g. shutil.copy ) and functions for copying directories (e.g. shutil.copytree ) but I haven't found any function that handles both. Sure, it's trivial to check whether you want to copy a file or a directory, but it seems like a strange omission.
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jQuery - Detect value change on hidden input field
I have a hidden text field whose value gets updated via an AJAX response.
8 Answers
8
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Are single quotes allowed in HTML?
I am a big time user of using double quotes in PHP so that I can interpolate variables rather than concatenating strings. As a result, when I am generating HTML I often use single quotes for setting tag fields. For example:
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Cleanest way to build an SQL string in Java
I want to build an SQL string to do database manipulation (updates, deletes, inserts, selects, that sort of thing) - instead of the awful string concat method using millions of "+"'s and quotes which is unreadable at best - there must be a better way.
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Convert nested Python dict to object?
I'm searching for an elegant way to get data using attribute access on a dict with some nested dicts and lists (i.e. javascript-style object syntax).
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Real world use cases of bitwise operators [closed]
What are some real world use cases of the following bitwise operators?
41 Answers
41
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Truncating all tables in a Postgres database
I regularly need to delete all the data from my PostgreSQL database before a rebuild. How would I do this directly in SQL?
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Download a specific tag with Git
I'm trying to figure out how I can download a particular tag of a Git repository - it's one version behind the current version.
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self referential struct definition?
I haven't been writing C for very long, and so I'm not sure about how I should go about doing these sorts of recursive things... I would like each cell to contain another cell, but I get an error along the lines of "field 'child' has incomplete type". What's up?
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C++ equivalent of StringBuffer/StringBuilder?
Is there a C++ Standard Template Library class that provides efficient string concatenation functionality, similar to C#'s StringBuilder or Java's StringBuffer ?
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