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What is a 'semantic predicate' in ANTLR?
... , 89");
NumbersLexer lexer = new NumbersLexer(in);
CommonTokenStream tokens = new CommonTokenStream(lexer);
NumbersParser parser = new NumbersParser(tokens);
parser.parse();
}
}
Test it by generating the lexer and parser, compiling all .java files and
running...
What do 'lazy' and 'greedy' mean in the context of regular expressions?
...hortest possible substring. You would have to use either a tempered greedy token, or use non-regex approaches.
– Wiktor Stribiżew
Oct 15 '16 at 21:29
3
...
Script entire database SQL-Server
... data, and then use our own database tool which allows keyword parsing and token based replacement in scripts. It also ensures scripts are only applied once.
Why?
We need to support installations on SQL Server 2000, 2005 and 2008, and there are changes to data types between versions, e.g. 2005+ ...
Set UILabel line spacing
... it with sub-classing UILabel, basically idea is to divide label text into tokens, and then identity length of each token, create a separate label for each token and append one after another. Thats it.
– Matrix
Oct 13 '10 at 11:41
...
How can I reliably determine the type of a variable that is declared using var at design time?
...int where code insight is desired) and the lexer turns this into a special token (it's called the kibitz token). Whenever the parser meets this token (which could be anywhere) it knows that this is the signal to send back all the information it has back to the editor. It does this using a longjmp be...
Why are hexadecimal numbers prefixed with 0x?
...his is great because
an integer constant now always consists of a single token,
the parser can still tell right away it's got a constant,
the parser can immediately tell the base (0 is the same in both bases),
it's mathematically sane (00005 == 05), and
no precious special characters are needed (a...
How to set a value of a variable inside a template code?
... self.new_val
return ''
import re
@register.tag
def setvar(parser,token):
# This version uses a regular expression to parse tag contents.
try:
# Splitting by None == splitting by spaces.
tag_name, arg = token.contents.split(None, 1)
except ValueError:
rai...
How to close this ssh tunnel? [closed]
...opened heads into the background. The nicer method of closing it is to run ps aux | grep 3306, find the pid of the ssh -f ... -L 3306:mysql-server.com:3306 -N, and kill <pid>. (Or maybe kill -9 <pid>; I forget if just kill works). That has the beautiful benefit of not killing all your ot...
How to get disk capacity and free space of remote computer
...
Much simpler solution:
Get-PSDrive C | Select-Object Used,Free
and for remote computers (needs Powershell Remoting)
Invoke-Command -ComputerName SRV2 {Get-PSDrive C} | Select-Object PSComputerName,Used,Free
...
How to filter Android logcat by application? [duplicate]
... Tags are used to identify which class/Application part is logging? In eclipse's logcat view it is possbile to filter by Application (for instance: de.myapplication.someapp) - so if eclipse's logcat can do that, there surely must be a way to do the same when using adb logcat? About the Tag's I menti...