大约有 34,900 项符合查询结果（耗时：0.0478秒） [XML]
Can I concatenate multiple MySQL rows into one field?
Using MySQL , I can do something like:
11 Answers
11
...
Selecting/excluding sets of columns in pandas [duplicate]
I would like to create views or dataframes from an existing dataframe based on column selections.
9 Answers
...
How to iterate over the keys and values in an object in CoffeeScript?
I have an object (an "associate array" so to say - also known as a plain JavaScript object):
4 Answers
...
Are loops really faster in reverse?
...his quite a few times. Are JavaScript loops really faster when counting backward? If so, why? I've seen a few test suite examples showing that reversed loops are quicker, but I can't find any explanation as to why!
...
SQL query to group by day
...
Gone Coding
86.4k2323 gold badges167167 silver badges183183 bronze badges
answered Nov 1 '09 at 21:22
Anwar ChandraAn...
Gunicorn worker timeout error
I have setup gunicorn with 3 workers 30 worker connections and using eventlet worker class. It is setup behind Nginx. After every few requests, I see this in the logs.
...
how to override action bar back button in android?
I want to customize the activity back button in action bar, not in hard key back button. I have overriden the onBackPressed() method. It works with my emulator back button, but not with action bar back button.
...
What's the difference between JPA and Hibernate? [closed]
...s no implementation. You can annotate your classes as much as you would like with JPA annotations, however without an implementation nothing will happen. Think of JPA as the guidelines that must be followed or an interface, while Hibernate's JPA implementation is code that meets the API as defined...
Safe integer parsing in Ruby
...those starting with 0x for hex and 0b for binary, and potentially more tricky numbers starting with zero that will be parsed as octal.
Ruby 1.9.2 added optional second argument for radix so above issue can be avoided:
Integer('23') # => 23
Integer('0x23') ...
Any recommendations for a CSS minifier? [closed]
...
The YUI Compressor is fantastic. It works on JavaScript and CSS. Check it out.
share
|
improve this answer
|
follow
|
...