大约有 21,000 项符合查询结果（耗时：0.0594秒） [XML]
How do I get the row count of a pandas DataFrame?
...
Nico Schlömer
31.2k1616 gold badges127127 silver badges167167 bronze badges
answered Apr 11 '13 at 8:24
rootroot
...
Why can't Python find shared objects that are in directories in sys.path?
... Check if your LD_LIBRARY_PATH includes /usr/local/lib, and if it doesn't, add it and try again.
Some more information (source):
In Linux, the environment variable
LD_LIBRARY_PATH is a colon-separated
set of directories where libraries
should be searched for first, before
the standard s...
What does the 'Z' mean in Unix timestamp '120314170138Z'?
...0 (see time zone history).
Since the NATO phonetic alphabet and amateur radio word for Z is
"Zulu", UTC is sometimes known as Zulu time.
Technically, because the definition of nautical time zones is based on longitudinal position, the Z time is not exactly identical to the actual GMT time 'zon...
How to install a gem or update RubyGems if it fails with a permissions error
... problem, I'd say it's not a good idea to continue along that track.
Instead, I'll strongly suggest you look into using either rbenv or RVM to manage a separate Ruby, installed into a sandbox in your home directory, that you can modify/fold/spindle/change without worrying about messing up the syste...
Unit testing void methods?
... verify if the strings were inserted in the right location. Check this thread for some good books... I'd recomment Pragmatic Unit Testing if you're in a crunch.
In the code it would be used like
InsertStringsIntoDatabase( ExamineLogFileForX( "c:\OMG.log" ) );
...
What are the differences between BDD frameworks for Java? [closed]
...ble
Very pretty report output
Nice plugin framework
Poorly documented. I had to read the source to figure it out (luckily its extremely good quality).
Fixtures seemed likely to end up tightly coupled to the html.
EasyB
Very shallow learning curve (even for non-Groovy Developers)
Extremely powerf...
How do I force “git pull” to overwrite local files?
...ll be lost.[*]
If you have any files that are not tracked by Git (e.g. uploaded user content), these files will not be affected.
First, run a fetch to update all origin/<branch> refs to latest:
git fetch --all
Then, you have two options:
git reset --hard origin/master
OR If you are on some ...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...
You can set a default option for the column in the migration
....
add_column :status, :string, :default => "P"
....
OR
You can use a callback, before_save
class Task < ActiveRecord::Base
before_save :default_values
def default_values
self.status ||= 'P' # note self.status ...
What's a quick way to comment/uncomment lines in Vim?
...ed in the comments:
for anyone who is confused by the usage, default leader is "\" so 10\cc will comment ten lines and 10\cu will uncomment those ten lines
share
|
improve this answer
...
Easiest way to convert int to string in C++
...
the_storyteller
1,8551717 silver badges2626 bronze badges
answered Apr 8 '11 at 6:13
Matthieu M.Matthieu M.
238k...