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How can I concatenate two arrays in Java?
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I found a one-line solution from the good old Apache Commons Lang library. ArrayUtils.addAll(T[], T...)
Code:
String[] both = ArrayUtils.addAll(first, second);
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Groovy / grails how to determine a data type?
...nother option to Dónal's answer, you can also still use the good old java.lang.Object.getClass() method.
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Hadoop “Unable to load native-hadoop library for your platform” warning
...DEBUG util.NativeCodeLoader: Failed to load native-hadoop with error: java.lang.UnsatisfiedLinkError: /opt/hadoop/lib/native/libhadoop.so.1.0.0: /lib64/libc.so.6: version `GLIBC_2.14' not found (required by /opt/hadoop/lib/native/libhadoop.so.1.0.0)
And the answer is revealed in this snippet of th...
HTML/CSS: Making two floating divs the same height
.../xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head></head>
<body>
<div id="container">
<div id="left-col">
<p>Test content</p>
<p>longer</p>
</div>
<div id...
Loop through Map in Groovy?
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Out of curiosity, where is this documented in the Groovy language docs (I don't think it is!)? I guess I'm wondering, from a Groovy newbies' perspective, How did you know this?
– smeeb
Oct 24 '15 at 10:40
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How to compare objects by multiple fields
...s Apache Commons. It provides a lot of options.
import org.apache.commons.lang3.builder.CompareToBuilder;
Ex:
public int compare(Person a, Person b){
return new CompareToBuilder()
.append(a.getName(), b.getName())
.append(a.getAddress(), b.getAddress())
.toComparison();
}
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Neo4j - Cypher vs Gremlin query language
...ere are two options for performing complex queries - Cypher (Neo4j's query language) and Gremlin (the general purpose graph query/traversal language).
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Generating all permutations of a given string
... be replaced by str.substring(i+1). Using str.substring(i) will cause java.lang.StackOverflowError.
– Ayusman
Aug 7 '13 at 7:25
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Why there is no ForEach extension method on IEnumerable?
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There is already a foreach statement included in the language that does the job most of the time.
I'd hate to see the following:
list.ForEach( item =>
{
item.DoSomething();
} );
Instead of:
foreach(Item item in list)
{
item.DoSomething();
}
The latter is clea...
How to capitalize the first character of each word in a string
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this code caused our server to crash:java.lang.StringIndexOutOfBoundsException: String index out of range: 0
– Chrizzz
Apr 9 '14 at 12:38
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