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How to print last two columns using awk
...at the two examples of computing the field index in the spec both use that form: $(NF-1) and $(NF+2). Then there's the "Expressions in awk" section, which lists $expr as having [much] higher precedence than expr - expr. Since NF is an expression itself, $NF-1 should evaluate to ($NF)-1. Even IF, aft...
One-liner to take some properties from object in ES 6
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This is a convenient form of omit, but not pick
– kirilloid
May 11 '17 at 10:56
5
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What is the use of ByteBuffer in Java? [closed]
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The ByteBuffer class is important because it forms a basis for the use of channels in Java. ByteBuffer class defines six categories of operations upon byte buffers, as stated in the Java 7 documentation:
Absolute and relative get and put methods that read and wri...
How to replace a set of tokens in a Java String?
... templating engine or anything like that for this. You can use the String.format method, like so:
String template = "Hello %s Please find attached %s which is due on %s";
String message = String.format(template, name, invoiceNumber, dueDate);
...
What does the ^ operator do in Java?
... multiply your result so far by 10 before adding the next digit.
In table form:
step result digit result*10+digit
1 init=0 8 8
2 8 6 86
3 86 7 867
4 867 5 8675
5 8675 3 ...
How to loop over directories in Linux?
...rnal tools in your case:
for dir in /tmp/*/ # list directories in the form "/tmp/dirname/"
do
dir=${dir%*/} # remove the trailing "/"
echo ${dir##*/} # print everything after the final "/"
done
share
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Difference Between Schema / Database in MySQL
... exactly is a schemata in MySQL? All I could find are references to the information_schema schemata table but no concise definition as to what it actually means
– Alf47
Apr 6 at 21:00
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What are the best Haskell libraries to operationalize a program? [closed]
...ong that work is taking. Ideally, the collected metrics are available in a format that's compatible with commonly-used monitoring tools like Ganglia, or can be so munged.
I'm not aware of any standardized reporting tools, however, extracting reports from +RTS -s streams (or via profiling output fl...
Unable to cast object of type 'System.DBNull' to type 'System.String`
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A shorter form can be used:
return (accountNumber == DBNull.Value) ? string.Empty : accountNumber.ToString()
EDIT: Haven't paid attention to ExecuteScalar. It does really return null if the field is absent in the return result. So u...
How do I format a number with commas in T-SQL?
...eyes are starting to gloss over. It would be really convenient if I could format all those numbers with commas (987654321 becomes 987,654,321). Funny that in all the many years I've used SQL Server, this issue has never come up since most of the time I would be doing formatting at the presentation...