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How do I use extern to share variables between source files?
I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope?
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Maximum number of threads per process in Linux?
What is the maximum number of threads that can be created by a process under Linux?
16 Answers
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efficient way to implement paging
...e indexes should be created as well to keep up the good performance.
Now, whats better?
If you have pretty much solid workflow in your logic, implementing the proper SQL way will be complicated. In that case LINQ will be the solution.
If you can lower that part of the logic directly to SQL (in a ...
Use of *args and **kwargs [duplicate]
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@mlh3789 yes, and this works with python3, only. But what is really a bit weird: this kinda works on assignments: a, b, *c, d, e = 1, 2, 3, 4, 5, 6 assigns c to [3, 4]. A bit confusing
– Christian Tismer
Oct 6 '14 at 11:11
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Renaming columns in pandas
...g, @RAY - don't do that. Looks like that's a list generated independent of whatever indexing stores the column name. Does a nice job destroying column naming for your df...
– Mitch Flax
Mar 11 '14 at 18:42
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Can an ASP.NET MVC controller return an Image?
... the fly as they are needed and caching them once they are created (that's what we do).
– Brian
Jun 27 '11 at 1:45
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Flushing footer to bottom of the page, twitter bootstrap
...ome problems with displaying page on iphone (page is zoomed in). Any ideas what is the problem? Here is some details: stackoverflow.com/questions/18621090/…
– pupadupa
Sep 5 '13 at 10:43
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Why are joins bad when considering scalability?
...this to hash or otherwise pre-compute the key columns of a join, such that what would be a complicated comparison for a join is now much smaller and potentially pre-indexed.
Table partitions (helps with large data sets by spreading the load out to multiple disks, or limiting what might have been a t...
How do I spool to a CSV formatted file using SQLPLUS?
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I need to spool CSV file from SQLPLUS, but the output has 250 columns.
What I did to avoid annoying SQLPLUS output formatting:
set linesize 9999
set pagesize 50000
spool myfile.csv
select x
from
(
select col1||';'||col2||';'||col3||';'||col4||';'||col5||';'||col6||';'||col7||';'||col8||';'||col...
Warning: push.default is unset; its implicit value is changing in Git 2.0
...e command line. Other clients can have different settings, it only affects what happens when you don't specify which branches you want to push.
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