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How can I concatenate regex literals in JavaScript?
Is it possible to do something like this?
12 Answers
12
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List vs List
...ing>>
but not a
List<Map<String,String>>
So:
void withWilds( List<? extends Map<String,String>> foo ){}
void noWilds( List<Map<String,String>> foo ){}
void main( String[] args ){
List<HashMap<String,String>> myMap;
withWilds( myMa...
Does the JVM prevent tail call optimizations?
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This post: Recursion or Iteration? might help.
In short, tail call optimization is hard to do in the JVM because of the security model and the need to always have a stack trace available. These requirements could in theory be supported, but it woul...
How do I run a batch file from my Java Application?
...y Java application, I want to run a batch file that calls " scons -Q implicit-deps-changed build\file_load_type export\file_load_type "
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Linking to an external URL in Javadoc?
...follow
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edited Apr 19 at 17:40
Arsen Khachaturyan
5,90933 gold badges3232 silver badges3434 bronze badges
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How to construct a relative path in Java from two absolute paths (or URLs)?
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It's a little roundabout, but why not use URI? It has a relativize method which does all the necessary checks for you.
String path = "/var/data/stuff/xyz.dat";
String base = "/var/data";
String relative = new File(base).toU...
C# 4.0 optional out/ref arguments
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As already mentioned, this is simply not allowed and I think it makes a very good sense.
However, to add some more details, here is a quote from the C# 4.0 Specification, section 21.1:
Formal parameters of constructors, methods, indexers and delegate types can be declared optional:...
How to handle click event in Button Column in Datagridview?
...'ve added a button to your DataGridView and you want to run some code when it's clicked.
Easy peasy - just follow these steps:
Don'ts:
First, here's what NOT to do:
I would avoid the suggestions in some of the other answers here and even provided by the documentation at MSDN to hardcode the column i...
What does |= (ior) do in Python?
...an update operation
counters: a union (of multisets) operation
numbers: a bitwise OR, binary operation
In most cases, it is related to the | operator. See examples below.
Sets
For example, the union of two assigned sets s1 and s2 share the following equivalent expressions:
>>> s1 = s1 | s...
Sending command line arguments to npm script
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Edit 2014.10.30: It's possible to pass args to npm run as of npm 2.0.0
The syntax is as follows:
npm run <command> [-- <args>]
Note the necessary --. It is needed to separate the params passed to npm command itse...