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Check if a String contains numbers Java
I'm writing a program where the user enters a String in the following format:
14 Answers
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What are five things you hate about your favorite language? [closed]
...are only a few different error messages and a few different types (Number, String, Object, etc.)
If it wasn't for jQuery, I'd probably still hate it as much as I used to :)
share
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Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?
...s infinitely safer than using escaping functions such as mysql_real_escape_string.
Yes, mysql_real_escape_string is effectively just a string escaping function. It is not a magic bullet. All it will do is escape dangerous characters in order that they can be safe to use in a single query string. Ho...
How to handle Objective-C protocols that contain properties?
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@interface MyClass () // Class extension
@property (nonatomic, strong) NSString *name;
@end
How to use property in protocol
So to use MyClass with that name property, we have to do either
Declare the property again (AppDelegate.h does this way)
@interface MyClass : NSObject <MyProtocol&...
Host 'xxx.xx.xxx.xxx' is not allowed to connect to this MySQL server
... it's not a great idea to have a user with this kind of access open to any IP. If you need an administrative user, use root, and leave it on localhost. For any other action specify exactly the privileges you need and limit the accessibility of the user as Pascal has suggest below.
Edit:
From the M...
Storing sex (gender) in database
... space savings, it only pays off if you have multiple bit fields.
Second, strings/chars have a "magic value" feel to them, regardless of how obvious they may seem at design time. Not to mention, it lets people store just about any value they would not necessarily map to anything obvious.
Third, a ...
What is the difference between varchar and varchar2 in Oracle?
...ARCHAR is reserved by Oracle to support distinction between NULL and empty string in future, as ANSI standard prescribes.
VARCHAR2 does not distinguish between a NULL and empty string, and never will.
If you rely on empty string and NULL being the same thing, you should use VARCHAR2.
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ROW_NUMBER() in MySQL
...e about that in the answer a tic ago. You can usually easily drop unwanted extra rows in the application layer afterwards on some random basis, but if you have a lot of rows all with the same col3 it can be problematic.
– bobince
Dec 13 '09 at 0:18
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Get original URL referer with PHP?
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try this
(isset ($_SERVER['HTTP_CLIENT_IP']) ?
$_SERVER['HTTP_CLIENT_IP'] :
(isset ($_SERVER['HTTP_X_FORWARDED_FOR']) ?
$_SERVER['HTTP_X_FORWARDED_FOR'] :
$_SERVER['REMOTE_ADDR']
)
)
...
What is AF_INET, and why do I need it?
... in Python socket module) addresses are represented as follows:
A single string is used for the AF_UNIX/AF_LOCAL address family. This option is used for IPC on local machines where no IP address is required.
A pair (host, port) is used for the AF_INET address family, where host is a string represe...