大约有 41,000 项符合查询结果(耗时:0.0440秒) [XML]

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Pandas conditional creation of a series/dataframe column

... If you only have two choices to select from: df['color'] = np.where(df['Set']=='Z', 'green', 'red') For example, import pandas as pd import numpy as np df = pd.DataFrame({'Type':list('ABBC'), 'Set':list('ZZXY')}) df['color'] = np.where(df['Set']=='Z', ...
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Is there a way to view past mysql queries with phpmyadmin?

... To view the past queries simply run this query in phpMyAdmin. SELECT * FROM `general_log` if it is not enabled, run the following two queries before running it. SET GLOBAL log_output = 'TABLE'; SET GLOBAL general_log = 'ON'; ...
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Difference between Hive internal tables and external tables?

...it. what happens? what do you mean by the data is not touched? if i give a select * of that table will it display? i am not able to picture the difference. – DrewRose Jun 11 '13 at 7:38 ...
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Flask SQLAlchemy query, specify column names

How do I specify the column that I want in my query using a model (it selects all columns by default)? I know how to do this with the sqlalchmey session: session.query(self.col1) , but how do I do it with with models? I can't do SomeModel.query() . Is there a way? ...
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“Conversion to Dalvik format failed with error 1” on external JAR

...n my case Android 1.5). click OK. Go to Project » Clean » Clean projects selected below » select your project and click OK. That should work. It is also possible that you have a JAR file located somewhere in your project folders (I had copied the Admob JAR file into my src folder) and THEN added...
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Webstorm: “Cannot Resolve Directory”

...t directory as a Resource. To do this, go to Settings > Directories and select your asset root folder from the right-hand panel. Then mark it as Resource Root by clicking the button above the file browser. From the Jetbrains documentation, a Resource Root enables WebStorm to complete relative pa...
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Random row from Linq to Sql

...ere row.IsActive // your filter orderby ctx.Random() select row).FirstOrDefault(); Note that this is only suitable for small-to-mid-size tables; for huge tables, it will have a performance impact at the server, and it will be more efficient to find the number of rows (Count),...
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Selector on background color of TextView

...r of an Android TextView widget when the user touches it. I've created a selector for that purpose, which is stored in res/color/selector.xml and roughly looks like that: ...
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UltiSnips and YouCompleteMe

... " make YCM compatible with UltiSnips (using supertab) let g:ycm_key_list_select_completion = ['<C-n>', '<Down>'] let g:ycm_key_list_previous_completion = ['<C-p>', '<Up>'] let g:SuperTabDefaultCompletionType = '<C-n>' " better key bindings for UltiSnipsExpandTrigger ...
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Combining C++ and C - how does #ifdef __cplusplus work?

...for functions with names like _Z1hic when you were looking for void h(int, char) 5: This sort of mixing is a common reason to use extern "C", and I don't see anything wrong with doing it this way -- just make sure you understand what you are doing. ...