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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
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You usually get this error if your tables use the InnoDB engine. In that case you would have to drop the foreign key, and then do the alter table and drop the column.
But the tricky part is that you can't drop the foreign key using...
Auto code completion on Eclipse
I want Eclipse to automatically suggest to me all possible options, while I'm writing some variable/class name or keyword, like in Flash Develop or Visual Studio.
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Could not find method compile() for arguments Gradle
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Looking back all this time, this is the most likely problem I was having. I have since obviously far moved on, but after getting notifications that this question was still open I think its only proper to indicate this as the 'correct' ans...
Python: Using .format() on a Unicode-escaped string
...gt; print s
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>>> print "{0}".format(s)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2265' in position 0: ordinal not in range(128)
>>> print u"{0}".format(s)
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>>>
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Fastest way to remove first char in a String
...ring is ever so slightly faster than Remove, in this sample test: 19.37ns vs 22.52ns for Remove. So some ~16% faster.
using System;
using BenchmarkDotNet.Attributes;
namespace BenchmarkFun
{
public class StringSubstringVsRemove
{
public readonly string SampleString = " My name is ...
How to use JavaScript source maps (.map files)?
...ow I can feel confident using it. Most gulp plugins are compatible now too vs a year ago when some were not. Just wanted to say it makes total sense!
– Eric Bishard
Aug 15 '15 at 16:05
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How do I remove duplicate items from an array in Perl?
...is as demonstrated in perlfaq4:
sub uniq {
my %seen;
grep !$seen{$_}++, @_;
}
my @array = qw(one two three two three);
my @filtered = uniq(@array);
print "@filtered\n";
Outputs:
one two three
If you want to use a module, try the uniq function from List::MoreUtils
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Email address validation using ASP.NET MVC data type attributes
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Validating email addresses with regex is usually a terrible idea... but if you must, there's an excellent reference here.. regular-expressions.info/email.html
– Molomby
Jul 23 '14 at 4:18
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Multiple inputs with same name through POST in php
... post and then access them from PHP? The idea is this: I have a form that allows the entry of an indefinite number of physical addresses along with other information. If I simply gave each of those fields the same name across several entries and submitted that data through post, would PHP be able ...
How does node.bcrypt.js compare hashed and plaintext passwords without the salt?
...in user in data base like this: column_password = hash, column_salt = salt vs column_password = hash_salt. attacker still has same information. Point of salt is to make every password so random and bigger that it becomes unlikely someone has precomputed it.
– Muhammad Umer
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