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Oracle Differences between NVL and Coalesce
...a part of ANSI-92 standard.
NVL is Oracle specific, it was introduced in 80's before there were any standards.
In case of two values, they are synonyms.
However, they are implemented differently.
NVL always evaluates both arguments, while COALESCE usually stops evaluation whenever it finds the f...
Is it possible for a unit test to assert that a method calls sys.exit()
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edited Mar 28 '13 at 0:43
answered Mar 28 '13 at 0:30
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How do I Convert DateTime.now to UTC in Ruby?
...DateTime and not Time? Time should include everything you need:
irb(main):016:0> Time.now
=> Thu Apr 16 12:40:44 +0100 2009
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Easiest way to copy a single file from host to Vagrant guest?
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108
Instead of using a shell provisioner to copy the file, you can also use a Vagrant file provisio...
Unittest setUp/tearDown for several tests
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edited Dec 5 '11 at 20:13
answered Dec 5 '11 at 19:56
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What is the difference between Numpy's array() and asarray() functions?
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answered Aug 30 '18 at 19:06
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How to get a specific output iterating a hash in Ruby?
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answered Aug 4 '09 at 13:38
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Why in Java 8 split sometimes removes empty strings at start of result array?
... in Java 7 and Java 8. The code is retrieved from grepcode, for version 7u40-b43 and 8-b132.
Java 7
public String[] split(CharSequence input, int limit) {
int index = 0;
boolean matchLimited = limit > 0;
ArrayList<String> matchList = new ArrayList<>();
Matcher m = ma...
How to compare two dates?
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505
Use the datetime method and the operator < and its kin.
>>> from datetime import d...
Convert to binary and keep leading zeros in Python
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Use the format() function:
>>> format(14, '#010b')
'0b00001110'
The format() function simply formats the input following the Format Specification mini language. The # makes the format include the 0b prefix, and the 010 size formats the output to fit in 10 characters ...