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Count number of occurrences of a pattern in a file (even on same line)
...color tags it prints out:
echo -e "a\nb b b\nc\ndef\nb e brb\nr" \
| GREP_COLOR="033" grep --color=always b \
| perl -e 'undef $/; $_=<>; s/\n//g; s/\x1b\x5b\x30\x33\x33/\n/g; print $_' \
| wc -l
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HTML encoding issues - “” character showing up instead of “ ”
I've got a legacy app just starting to misbehave, for whatever reason I'm not sure. It generates a bunch of HTML that gets turned into PDF reports by ActivePDF.
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What is a web service endpoint?
...Service– a collection of related endpoints.
http://www.ehow.com/info_12212371_definition-service-endpoint.html
The endpoint is a connection point where HTML files or active server pages are exposed. Endpoints provide information needed to address a Web service endpoint. The endpoint provi...
What is the difference between precision and scale?
... significant digits.
Reference:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/datatype.htm#CNCPT1832
That page also has some examples that will make you understand precision and scale.
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What happens if you don't commit a transaction to a database (say, SQL Server)?
...ion, it's still "running" and potentially holding locks.
If your client (application or user) closes the connection to the database before committing, any still running transactions will be rolled back and terminated.
shar...
Gson - convert from Json to a typed ArrayList
... is an interface implemented by different kinds of logs made by my Android app--SMS logs, call logs, data logs--and this ArrayList is a collection of all of them. I keep getting an error in line 6.
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Foreach loop, determine which is the last iteration of the loop
...ould tell that the item was the same as the item returned by Last().
This approach should be used with caution as Last may well have to iterate through the collection. While this might not be a problem for small collections, if it gets large it could have performance implications. It will also fail...
C++ lambda with captures as a function pointer
... @KerrekSB put the global variables in a namespace and mark them as thread_local, that's the ftw approach I chose for solving something similar.
– Kjell Hedström
Apr 21 '14 at 15:08
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Quickly reading very large tables as dataframes
...rom csv/tab-delimited files directly into R. See mnel's answer.
Using read_table in readr (on CRAN from April 2015). This works much like fread above. The readme in the link explains the difference between the two functions (readr currently claims to be "1.5-2x slower" than data.table::fread).
r...
How to change XAMPP apache server port?
... link for Linux.
Locate the following lines:
Listen 443
<VirtualHost _default_:443>
ServerName localhost:443
Replace them by with a other port number (8013 for this example) :
Listen 8013
<VirtualHost _default_:8013>
ServerName localhost:8013
Save the file.
Restart the Apache Se...