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How does the String class override the + operator?
Why in Java you're able to add Strings with the + operator, when String is a class? In the String.java code I did not find any implementation for this operator. Does this concept violate object orientation?
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
I'm trying to create a Regex test in JavaScript that will test a string to contain any of these characters:
6 Answers
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Jenkins Host key verification failed
...The better way to do that is to generate correct mappings between host and ip address, so ssh will not complain:
#!/bin/bash
for domain in "github.com" "bitbucket.org"; do
sed -i "/$domain/d" ~/.ssh/known_hosts
line=$(ssh-keyscan $domain,`nslookup $domain | awk '/^Address: / { print $2 ; e...
String is immutable. What exactly is the meaning? [duplicate]
I wrote the following code on immutable Strings.
19 Answers
19
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Does Android support near real time push notification?
I recently learned about the ability of iPhone apps to receive nearly instantaneous notifications to apps notifications to apps .
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Difference between using bean id and name in Spring configuration file
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Since Spring 3.1 the id attribute is an xsd:string and permits the same range of characters as the name attribute.
The only difference between an id and a name is that a name can contain multiple aliases separated by a comma, semicolon or whitespace, whereas an id mus...
Static nested class in Java, why?
...ass(1);
}
}
}
public class Test {
public static void main(String[] args) {
OuterClass.InnerClass.test();
// OuterClass outer = new OuterClass(1); // It is not possible to create outer instance from outside.
}
}
This will output x: 1
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Dealing with commas in a CSV file
...ader reader = new CsvReader( "data.csv" ) )
{
foreach( string[] values in reader.RowEnumerator )
{
Console.WriteLine( "Row {0} has {1} values.", reader.RowIndex, values.Length );
}
}
Console.ReadLine();
}
}
Here are th...
How to pass boolean values to a PowerShell script from a command prompt
...arameter is used. In particular, the $false argument is being treated as a string value, in a similar way to the example below:
PS> function f( [bool]$b ) { $b }; f -b '$false'
f : Cannot process argument transformation on parameter 'b'. Cannot convert value
"System.String" to type "System.Bool...
GCC -g vs -g3 GDB Flag: What is the Difference?
...ging information. On most systems that use stabs format, -g
enables use of extra debugging information that only GDB can use; this
extra information makes debugging work better in GDB but probably
makes other debuggers crash or refuse to read the program. If you want
to control for certain whether t...