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What is a 'semantic predicate' in ANTLR?
...gStream("123, 456, 7777 , 89");
and do the test again: you will see an error appearing on the console right after the string 777.
Semantic Predicates
This brings us to the semantic predicates. Let's say you want to parse
numbers between 1 and 10 digits long. A rule like:
number
: Digit ...
XAMPP - Port 80 in use by “Unable to open process” with PID 4! 12
...80
When you press "Start" the application can still say that you have an error like "Port 80 in use by "Unable to open process" with PID..." but it will still work.
If the error includes "Port 443 in use by "Unable to open process" with PID..." you need to change both httpd.conf and httpd-ssl.con...
Add unique constraint to combination of two columns
...tions are expensive).
http://www.sqlperformance.com/2012/08/t-sql-queries/error-handling
http://www.mssqltips.com/sqlservertip/2632/checking-for-potential-constraint-violations-before-entering-sql-server-try-and-catch-logic/
If you want to prevent exceptions from bubbling up to the application, w...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
...
In July 2015 this no longer works (error: "Cannot query users by their username")
– Flimm
Jul 1 '15 at 9:07
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...
How do I enable/disable log levels in Android?
... based on loglevel.
public static int LOGLEVEL = 2;
public static boolean ERROR = LOGLEVEL > 0;
public static boolean WARN = LOGLEVEL > 1;
...
public static boolean VERBOSE = LOGLEVEL > 4;
if (VERBOSE) Log.v(TAG, "Message here"); // Won't be shown
if (WARN) Log.w(TAG, "WARNING HER...
How slow are .NET exceptions?
...re'd be more stack to go through, so you'd blow the cache etc" - but using error codes to work your way up the stack would also blow the cache, so I don't see that as a particularly good argument.
Just to make it clear - I don't support using exceptions where they're not logical. For instance, int....
Why is System.Web.Mvc not listed in Add References?
... I tried this method in Visual Studio Community 2015 but I got a runtime error related to version incompatibility (Could not load file or assembly...The located assembly's manifest definition does not match the assembly reference). I have another project in my solution referencing a different vers...
How to zip a whole folder using PHP
...lder, but i have also a folder within a folder My folder which gives me an error of: Permission denied by unlinking the folder with in My folder
– woninana
Feb 6 '11 at 17:13
...
How can I make git ignore future revisions to a file?
... in git status, but when I tried to checkout to different branch, I've got error: Your local changes to the following files would be overwritten by checkout: , even -f does not help error: Entry 'wix-stores-merchant-app/demo/credentials.js' not uptodate. Cannot merge.
– ykravv
...
Ternary operator (?:) in Bash
...ug: if op1 has a nonzero exit status, op2 silently becomes the result; the error will also not be caught in -e mode. So, that expression is only safe to use if op1 can never fail (e.g., :, true if a builtin, or variable assignment without any operations that can fail (like division and OS calls)).
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