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random.seed(): What does it do?
...on the same input. This means, it depends on the value of the seed. So, in order to make it more random, time is automatically assigned to seed().
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Log all queries in mysql
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For viewing the log SELECT * FROM mysql.general_log order by (event_time) desc will do better. just saying.:-)
– vinrav
Dec 8 '15 at 6:23
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Using jQuery to test if an input has focus
...ilding, several <div> s use the CSS :hover pseudo-class to add a border when the mouse is over them. One of the <div> s contains a <form> which, using jQuery, will keep the border if an input within it has focus. This works perfectly except that IE6 does not support :hover ...
Find index of last occurrence of a sub-string using T-SQL
...ion, followed CHARINDEX, followed again by REVERSE to restore the original order. For instance:
SELECT
mf.name
,mf.physical_name
,reverse(left(reverse(physical_name), charindex('\', reverse(physical_name)) -1))
from sys.master_files mf
shows how to extract the actual database file names f...
Polymorphism in C++
...conversion sequence is a sequence of standard conversions in the following order:
Zero or one conversion from the following set: lvalue-to-rvalue conversion, array-to-pointer conversion, and function-to-pointer conversion.
Zero or one conversion from the following set: integral promotions, floa...
MySQL “WITH” clause
...uery
left join mytable as mytable.mycol = col1
where mytable.mycol is null
order by col1
You may want to use a text editor with macro capabilities to convert a list of values to the quoted select union clause.
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Best way to check for nullable bool in a condition expression (if …)
... x is fine in context and is sometimes cleaner; to wit: var openOrders = orders.Where(x=>x.Open ?? false)
– nothingisnecessary
Oct 24 '19 at 16:25
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How to move the cursor word by word in the OS X Terminal
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It was inconvenient to re-press both keys in order to re-execute the command again. I find it pretty lame to do this in Mac OSX Terminal, compare to the GNOME Terminal.
– Phương Nguyễn
Jun 1 '10 at 2:35
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Best way to synchronize local HTML5 DB (WebSQL Storage, SQLite) with a server (2 way sync) [closed]
...of the last sync (table sync_info). It will also create SQLite triggers in order to watch the INSERT or UPDATE on the tables you want to synchronize (to automatically insert the modified elements in the new_elem table):
DBSYNC.initSync(TABLES_TO_SYNC, webSqlDb, sync_info, 'http://www.myserver.com',...
How to use glob() to find files recursively?
...ither way. As it stands now, it matches the "files then pattern" argument order of fnmatch.filter, which is roughly as useful as the possibility of matching single-argument glob.glob.
– Alex Martelli
Jan 4 '15 at 21:43
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