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SQL Server IN vs. EXISTS Performance
...ns any rows.
Join: Joins 2 resultsets on the joining column.
Blog credit: https://stackoverflow.com/users/31345/mladen-prajdic
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how to make twitter bootstrap submenu to open on the left side?
...thing else here</button>
</div>
</div>
Link to code: https://getbootstrap.com/docs/4.0/components/dropdowns/#menu-items
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What is the C runtime library?
...
A good description of the different choices for runtime libraries:
http://www.davidlenihan.com/2008/01/choosing_the_correct_cc_runtim.html
It includes those functions you don't normally think of as needing a library to call:
malloc
enum, struct
abs, min
assert
Microsoft has a nice list of thei...
Changing a specific column name in pandas DataFrame
...stion works regardless of whether it is named or unnamed, and in one line: https://stackoverflow.com/a/26336314/4355695
df.rename(columns = {list(df)[1]:'new_name'}, inplace=True)
# 1 is for second column (0,1,2..)
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How can I get Git to follow symlinks?
...olume formats on macOS.
From APFS FAQ on developer.apple.com
Follow https://github.com/selkhateeb/hardlink/issues/31 for future alternatives.
On Linux and other Unix flavors
The ln command can make hard links:
ln source destination
On Windows (Vista, 7, 8, …)
Someone suggested to use ...
SQL select join: is it possible to prefix all columns as 'prefix.*'?
...e with PRAGMA full_column_names and PRAGMA short_column_names. See http://www.sqlite.org/pragma.html
Otherwise all I can recommend is to fetch columns in a result set by ordinal position rather than by column name, if it's too much trouble for you to type the names of the columns in your query.
T...
In a javascript array, how do I get the last 5 elements, excluding the first element?
...arr2.slice(1).slice(-5);
Another way to do it would be using lodash https://lodash.com/docs#rest - that is of course if you don't mind having to load a huge javascript minified file if your trying to do it from your browser.
_.slice(_.rest(arr), -5)
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Writing to an Excel spreadsheet
... sh.write(m, 1, e2)
book.save(filename)
for more explanation:
https://github.com/python-excel
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When should we use mutex and when should we use semaphore
...ask 2 - Consumer */
sema_wait(&sem); // Wait for signal
See http://www.netrino.com/node/202 for further explanations
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Get the string representation of a DOM node
...n be set to replace the element with nodes parsed from the given string.
https://developer.mozilla.org/en-US/docs/Web/API/Element/outerHTML
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