大约有 40,000 项符合查询结果（耗时：0.0465秒） [XML]
Declaration/definition of variables locations in ObjectiveC?
Ever since starting to work on iOS apps and objective C I've been really puzzled by the different locations where one could be declaring and defining variables. On one hand we have the traditional C approach, on the other we have the new ObjectiveC directives that add OO on top of that. Could you fo...
Is there a way to 'uniq' by column?
...o you need the ,1 in -k1,1? why not just -k1?
– hello_there_andy
Nov 24 '14 at 20:10
19
@hello_th...
Javascript Shorthand for getElementById
...
@patrick dw I like that. Especially with the wealth of valid variable names out there :)
– Fox Wilson
Jun 18 '11 at 20:56
4
...
ng-model for `` (with directive DEMO)
... scope.fileread = changeEvent.target.files[0];
// or all selected files:
// scope.fileread = changeEvent.target.files;
});
});
}
}
}]);
share...
Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_
...lations are needed and used when ordering and comparing strings. It's generally a good idea to have a single, unique collation used throughout your database - don't use different collations within a single table or database - you're only asking for trouble....
Once you've settled for one single col...
Iterating over all the keys of a map
Is there a way to get a list of all the keys in a Go language map? The number of elements is given by len() , but if I have a map like:
...
List of tables, db schema, dump etc using the Python sqlite3 API
...te("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
Watch out for my other answer. There is a much faster way using pandas.
share
|
improve this answer
|
...
How to get the last N rows of a pandas DataFrame?
... dataframe df1 and df2 (df1 is vanila dataframe, df2 is indexed by 'STK_ID' & 'RPT_Date') :
3 Answers
...
How do I find out what keystore my JVM is using?
...
Your keystore will be in your JAVA_HOME---> JRE -->lib---> security--> cacerts. You need to check where your JAVA_HOME is configured, possibly one of these places,
Computer--->Advanced --> Environment variables---> JAVA_HOME
Your serv...
How can I output leading zeros in Ruby?
...counter is known (e.g., n = 3 for counters 1..876), you can do
str = "file_" + i.to_s.rjust(n, "0")
share
|
improve this answer
|
follow
|
...