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When to use generic methods and when to use wild-card?
...add(o); // correct
}
}
But the following will result in compile time error.
static <T> void fromArrayToCollection(T[] a, Collection<?> c) {
for (T o : a) {
c.add(o); // compile time error
}
}
Performance differences between debug and release builds
...ld run perfectly fine in Debug mode, but given the exact same input, would error out in Release mode. These bugs are EXTREMELY difficult to debug (by definition of Release mode, ironically).
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How to calculate the bounding box for a given lat/lng location?
...This code does not work, at all. I mean, even after fixing up the obvious errors like minLon = void 0; and maxLon = MAX_LON; it still doesn't work.
– aroth
Nov 21 '15 at 15:08
1
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How To Create Table with Identity Column
...ol probably doesn't have, a "use simpler syntax if possible" option. Least error prone, for OP's specific situation, would be to edit the one line in the generated DDL, and not try to write it from scratch using simplest syntax. Also the example you gave does not assign a name to the PK constraint a...
Git submodule add: “a git directory is found locally” issue
... was no reason for the cache. Turns out in .git/modules that is where this error was lying.
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...emory:
Initializing buffer pool, size = 512.0M
A few lines down, the error message tells you MySQL will not start because it cannot reserve enough (512M) memory for the InnoDB buffer pool:
Fatal error: cannot allocate memory for the buffer pool
That begs three questions:
How much memor...
How to execute PHP code from the command line?
...
php -r "echo 1"
-- correct
php -r 'echo 1'
-- incorrect
PHP Parse error: syntax error, unexpected ''echo' (T_ENCAPSED_AND_WHITESPACE), expecting end of file in Command line code on line 1
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Best way to allow plugins for a PHP application
...();
$args = func_get_args();
if($num_args < 2)
trigger_error("Insufficient arguments", E_USER_ERROR);
// Hook name should always be first argument
$hook_name = array_shift($args);
if(!isset($listeners[$hook_name]))
return; // No plugins have registered this ...
REST API Best practices: Where to put parameters? [closed]
...tend to be easier to put in the query string.
If you want to return a 404 error when the parameter value does not correspond to an existing resource then I would tend towards a path segment parameter. e.g. /customer/232 where 232 is not a valid customer id.
If however you want to return an empty l...
Add data annotations to a class generated by entity framework
...l be better use interfaces instead. In this case you will have compilation errors if EF model doesn't correspond to validation model. So you can modify your EF models without fear that validation rules are outdated.
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
nam...