大约有 5,882 项符合查询结果（耗时：0.0202秒） [XML]
How can I extract the folder path from file path in Python?
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Anyone trying to do this in the ESRI GIS Table field calculator interface can do this with the Python parser:
PathToContainingFolder =
"\\".join(!FullFilePathWithFileName!.split("\\")[0:-1])
so that
\Users\me\Desktop\New folder\file.txt
becomes
\Users\me\De...
Byte[] to InputStream or OutputStream
I have a blob column in my database table, for which I have to use byte[] in my Java program as a mapping and to use this data I have to convert it to InputStream or OutputStream . But I don't know what happens internally when I do so. Can anyone briefly explain me what's happening when I do th...
How to execute IN() SQL queries with Spring's JDBCTemplate effectivly?
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You should probably insert the values into a temporary table and build the condition using WHERE NOT EXISTS (SELECT ...).
– yawn
May 26 '10 at 11:17
6
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Adding a column to a data.frame
...number of groups (x in mapply) and its length (y in mapply)
mytb<-read.table(text="h_no h_freq h_freqsq group
1 0.09091 0.008264628 1
2 0.00000 0.000000000 1
3 0.04545 0.002065702 1
4 0.00000 0.000000000 1
1 0.13636 0.018594050 2
2 0.00000 0.000000000 2
3 0.00000 ...
How to get a one-dimensional scalar array as a doctrine dql query result?
I want to get an array of values from the id column of the Auction table.
If this was a raw SQL I would write:
5 Answers
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What are all possible pos tags of NLTK?
...abler if others are like me, I had wrong expectations. I expected a lookup table/list/map, mapping the pos acronyms like RB to their meaning like adverb. (Here is an example; or see @Suzana's answer, which links the Penn Treebank Tag Set). But you're right, the builtin nltk.help.upenn_tagset('RB')is...
How to run Node.js as a background process and never die?
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@L0j1k debatable, OP has demonstrated a level of understanding that litte further explanation is required for the accepted answer.
– JFA
Jun 3 '14 at 16:15
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Rails 3 execute custom sql query without a model
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Maybe try this:
ActiveRecord::Base.establish_connection(...)
ActiveRecord::Base.connection.execute(...)
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Return empty cell from formula in Excel
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Maybe this is cheating, but it works!
I also needed a table that is the source for a graph, and I didn't want any blank or zero cells to produce a point on the graph. It is true that you need to set the graph property, select data, hidden and empty cells to "show empty cells as ...
push_back vs emplace_back
...l because no matter how much cleverness RVO and move semantic bring to the table there is still complicated cases where a push_back is likely to make unnecessary copies (or move). For example, with the traditional insert() function of a std::map, you have to create a temporary, which will then be co...