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How to show only next line after the matched one?
...ter a match, then pipe the result to tail and only grab 1 line,
cat logs/info.log | grep "term" -A1 | tail -n 1
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How do I see the commit differences between branches in git?
...aster...branch-X (three dots instead of two). See man gitrevisionsfor more info.
– Xavier T.
Aug 5 '16 at 8:16
3
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Is it faster to count down than it is to count up?
...what is essentially a comparison of the result of the operation with 0 for free. In fact on many architectures
x = x - 0
is semantically the same as
compare x, 0
Also, the compare against a 10 in my example could result in worse code. 10 may have to live in a register, so if they are in shor...
Haskell testing workflow
... make it easier for people to use HTF and to ask questions about HTF. Feel free to do so!
– stefanwehr
Sep 26 '12 at 21:57
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A Java API to generate Java source files [closed]
...erating Java source files using an API. It's not the easiest thing to get information on, but it's there and it works extremely well.
The easiest way to get hold of it is as part of the JAXB 2 RI - the XJC schema-to-java generator uses CodeModel to generate its java source, and it's part of the XJ...
Run a single test method with maven
...d: No tests were executed!
mvn test -Dtest=DesignRulesTest
Result:
[INFO] --- maven-surefire-plugin:2.11:test (default-test) @ pmd ---
...
Running net.sourceforge.pmd.lang.java.rule.design.DesignRulesTest
Tests run: 5, Failures: 0, Errors: 0, Skipped: 4, Time elapsed: 4.009 sec
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How can I get the line number which threw exception?
...(Exception ex)
{
// Get stack trace for the exception with source file information
var st = new StackTrace(ex, true);
// Get the top stack frame
var frame = st.GetFrame(0);
// Get the line number from the stack frame
var line = frame.GetFileLineNumber();
}
Note that this wi...
Convert UTC date time to local date time
... general case return a datetime in the standardized ISO 8601-format.
More info here:
http://www.w3.org/TR/NOTE-datetime
https://en.wikipedia.org/wiki/ISO_8601
IN this case the server would return '2011-06-29T16:52:48.000Z' which would feed directly into the JS Date object.
var utcDate = '2011-...
How to extract year and month from date in PostgreSQL without using to_char() function?
...
You can truncate all information after the month using date_trunc(text, timestamp):
select date_trunc('month',created_at)::date as date
from orders
order by date DESC;
Example:
Input:
created_at = '2019-12-16 18:28:13'
Output 1:
date_t...
Remove blank lines with grep
...ecommend reading up on regular expressions. http://www.regular-expressions.info/tutorial.html
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