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Can a CSV file have a comment?
...to signal a comment.
I use the ostermiller CSV parsing library for Java to read and process such files. That library allows you to set the comment character. After the parse operation you get an array just containing the real data, no comments.
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Session variables in ASP.NET MVC
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@AjayKelkar This comment thread suggested "If ASP MVC is being used then it is preferable to not use the actual Session object from HttpContext.Current.Session but to use the new HttpSessionStateWrapper&HttpSessionStateBase" which suggests your ans...
Regular Expressions and negating a whole character group [duplicate]
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@Blixit: yes, it is. But it's also harder to read, especially for regex newbies. The one I posted will be efficient enough for most applications.
– Alan Moore
Jun 10 '09 at 18:24
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Comparing two dataframes and getting the differences
...en
2013-11-25 Apple 22.1 Red
2013-11-25 Orange 8.6 Orange""")
df1 = pd.read_table(DF1, sep='\s+')
df2 = pd.read_table(DF2, sep='\s+')
#%%
dfs_dictionary = {'DF1':df1,'DF2':df2}
df=pd.concat(dfs_dictionary)
df.drop_duplicates(keep=False)
Result:
Date Fruit Num Color
DF2 4 2...
Can HTML checkboxes be set to readonly?
...t as I'm not putting my money where my mouth was (so to speak) setting the readonly attribute doesn't actually seem to do anything.
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Is there any good dynamic SQL builder library in Java? [closed]
...dTable(t);
println platform.getCreateModelSql(db, false, false)
//you can read Table Object from platform.readModelFromDatabase(....)
def sqlbuilder = platform.getSqlBuilder();
println "insert:"+sqlbuilder.getInsertSql(t,["id":1,c2:3],false);
println "update:"+sqlbuilder.getUpdateSql(t,["id":1,c2:...
SQL Server loop - how do I loop through a set of records
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@ataravati Because this solution reads more cleanly to many programmers than does cursors. The syntax for cursors is rather awkward for some.
– Brian Webster
Jul 10 '15 at 21:14
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How can I remove a trailing newline?
... @briandfoy Python has built-in support for Universal newlines (only when reading, not when writing). You open the file in either "U" or "rU" mode, and then regardless of Windows, Linux, Mac, whatever, by the time the text reaches your python code, any style of newline has been replaced with "\n". ...
LaTeX table positioning
...nt the 4 tables to appear between the two paragraphs which from what I've read means I should use the [h] option after beginning the table environment (e.g. \begin{table}[h] ).
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How to detect if a script is being sourced
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After reading @DennisWilliamson's answer, there are some issues, see below:
As this question stand for ksh and bash, there is another part in this answer concerning ksh... see below.
Simple bash way
[ "$0" = "$BASH_SOURCE" ]
L...