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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...be predicted correctly
Your Core2 doesn't keep a separate history record for each conditional jump. Instead it keeps a shared history of all conditional jumps. One disadvantage of global branch prediction is that the history is diluted by irrelevant information if the different conditional jumps ...
Splitting string into multiple rows in Oracle
...ng of oracle types.
The cast(multiset(.....)) as sys.OdciNumberList transforms multiple collections (one collection for each row in the original data set) into a single collection of numbers, OdciNumberList.
The table() function transforms a collection into a resultset.
FROM without a join create...
How can I view all the git repositories on my machine?
...h I can see all the git repositories that exist on my machine? Any command for that?
10 Answers
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Extract a substring according to a pattern
...colon were not always in a known position we could modify (4) by searching for it:
substring(string, regexpr(":", string) + 1)
5) strapplyc
strapplyc returns the parenthesized portion:
library(gsubfn)
strapplyc(string, ":(.*)", simplify = TRUE)
## [1] "E001" "E002" "E003"
6) read.dcf
This one only...
Using Sinatra for larger projects via multiple files
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Here is a basic template for Sinatra apps that I use. (My larger apps have 200+ files broken out like this, not counting vendor'd gems, covering 75-100 explicit routes. Some of these routes are Regexp routes covering an additional 50+ route patterns....
how to read value from string.xml in android?
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Also works for other types like I just used getResouces().getInteger(R.integer.my_value_in_xml)
– Noah Herron
Aug 19 '15 at 0:51
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How is null + true a string?
...es from the C# language spec.
From section 7.3.4:
An operation of the form x op y, where op is an overloadable binary operator, x is an expression of type X, and y is an expression of type Y, is processed as follows:
The set of candidate user-defined operators provided by X and Y for th...
An example of how to use getopts in bash
... should return 0, upon hitting a non-existing flag it should return >0 (for the sake of simplicity I didn't differentiate between those cases and nobody forces you to print the usage text in the latter case). I have seen programs which always return != 0, though, even on -h/--help. Maybe I should...
Automatic post-registration user authentication
...tomatically logged in with those credentials, instead of being immediately forced to provide their credentials again.
9 Ans...
PowerShell equivalent to grep -f
I'm looking for the PowerShell equivalent to grep --file=filename . If you don't know grep , filename is a text file where each line has a regular expression pattern you want to match.
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