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Is cout synchronized/thread-safe?
...ries to call xsputn or whatever. It might depend on how your compiler and CPU decide to reorder memory loads and stores; it would take a careful analysis to be sure. It also depends what your CPU does if two threads try to modify the same location concurrently.
In other words, even if it happens ...
How to measure time taken by a function to execute
...E 10 ++
FireFox 15 ++
Chrome 24 ++
Safari 8 ++
Opera 15 ++
Android 4.4 ++
etc, etc
console.time may be viable for you, but it's non-standard §:
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. The...
Compile Views in ASP.NET MVC
...it (I find it fine on a large-ish project with 4GB ram and a hyperthreaded CPU) but I easily make back the time I spend waiting for it, and I end up doing fewer operations on my code as R# provides higher level operations that batch together the many steps I'd have to take to achieve the same task m...
Should I commit or rollback a read transaction?
...n exactly one row as expected
a stored procedure raises an exception
data fetched is found to be inconsistent
user aborts the transaction because it's taking too long
deadlock or timeout
If COMMIT and ROLLBACK are used properly for a read-only transaction, it will continue to work as expected if D...
Way to read first few lines for pandas dataframe
... pandas as pd
In [2]: time z = pd.read_csv("P00000001-ALL.csv", nrows=20)
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.00 s
In [3]: len(z)
Out[3]: 20
In [4]: time z = pd.read_csv("P00000001-ALL.csv")
CPU times: user 27.63 s, sys: 1.92 s, total: 29.55 s
Wall time: 30.23 s
...
What are important languages to learn to understand different approaches and concepts? [closed]
...
What about Prolog (for unification/backtracking etc), Smalltalk (for "everything's a message"), Forth (reverse polish, threaded interpreters etc), Scheme (continuations)?
Not a language, but the Art of the Metaobject Protocol is mind-bending stuff
...
'Microsoft.SqlServer.Types' version 10 or higher could not be found on Azure
...a to the web app just for using DbGeography (no thanks) it's also heavy on CPU when using it in SQL Server... taking it out.
– Yovav
Jun 21 '16 at 5:59
13
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Is there a combination of “LIKE” and “IN” in SQL?
...elects can be replaced by another source of patterns like a table, a view, etc.
– mik
Aug 6 '18 at 12:48
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pdftk compression option
...okmarks TOC are gone
gs screen:
takes a ridiculously long time and 100% CPU
errors:
sfopen: gs_parse_file_name failed. ?
| ./base/gsicc_manage.c:1651: gsicc_set_device_profile(): cannot find device profile
74.8MB-->10.2MB hideously pixellated
bookmarks ...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
... the high half doesn't create a dependency on the previous value, that the CPU would have to wait on. The register renaming mechanism would essentially be defeated if it wasn't done that way.
This way you can write fast code using 32-bit values in 64-bit mode without having to explicitly break depe...