大约有 44,000 项符合查询结果（耗时：0.0582秒） [XML]
Python strftime - date without leading 0?
When using Python strftime , is there a way to remove the first 0 of the date if it's before the 10th, ie. so 01 is 1 ? Can't find a % thingy for that?
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Iteration ng-repeat only X times in AngularJs
How can I use ng-repeat like for in Javascript?
7 Answers
7
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Difference between __getattr__ vs __getattribute__
I am trying to understand when to use __getattr__ or __getattribute__ . The documentation mentions __getattribute__ applies to new-style classes. What are new-style classes?
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Update multiple columns in SQL
Is there a way to update multiple columns in SQL server the same way an insert statement is used?
13 Answers
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How to split a string in shell and get the last field
Suppose I have the string 1:2:3:4:5 and I want to get its last field ( 5 in this case). How do I do that using Bash? I tried cut , but I don't know how to specify the last field with -f .
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How to chain scope queries with OR instead of AND?
I'm using Rails3, ActiveRecord
19 Answers
19
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How to reorder data.table columns (without copying)
I'd like to reorder columns in my data.table x , given a character vector of column names, neworder :
2 Answers
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Can every recursion be converted into iteration?
A reddit thread brought up an apparently interesting question:
17 Answers
17
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builder for HashMap
Guava provides us with great factory methods for Java types, such as Maps.newHashMap() .
15 Answers
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Proper stack and heap usage in C++?
I've been programming for a while but It's been mostly Java and C#. I've never actually had to manage memory on my own. I recently began programming in C++ and I'm a little confused as to when I should store things on the stack and when to store them on the heap.
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