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In an array of objects, fastest way to find the index of an object whose attributes match a search
...ly, the hash function I provide is not valid for all cases since '_' could form part of your values but it is just a quick example you can figure out different hash methods.
– Pablo Francisco Pérez Hidalgo
Sep 5 '14 at 10:12
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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);
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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...