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Check if a string has white space
...) {
return /\s/g.test(s);
}
This will also check for other white space characters like Tab.
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List columns with indexes in PostgreSQL
...constraint uk_test3ab unique (a, b));
List indexes and columns indexed:
select
t.relname as table_name,
i.relname as index_name,
a.attname as column_name
from
pg_class t,
pg_class i,
pg_index ix,
pg_attribute a
where
t.oid = ix.indrelid
and i.oid = ix.indexreli...
Is there a way to get rid of accents and convert a whole string to regular letters?
...ble" deconstruction
This will separate all of the accent marks from the characters. Then, you just need to compare each character against being a letter and throw out the ones that aren't.
string = string.replaceAll("[^\\p{ASCII}]", "");
If your text is in unicode, you should use this instead...
Get a substring of a char* [duplicate]
...
char subbuff[5];
memcpy( subbuff, &buff[10], 4 );
subbuff[4] = '\0';
Job done :)
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How do I get the user agent with Flask?
... 'xforwardedfor': str,
'authorization': bool
'ip_info': str or None,
'path': str,
'speed': float,
'date': datetime,
},
{
....
}
]
Here is one of the places in the library where the data is collected:
https://gith...
Mac OSX Lion DNS lookup order [closed]
... the hosts file, I have found that in some circumstances, Lion queries the IPv6 address for a domain if it senses that a domain is unreachable over the IPv4 network.
I discovered this when I noticed some ads that I had never seen before on Snow Leopard because I had redirected the ad domains to 127...
Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
...e - which are typically implemented internally using b-trees (allowing for selecting, sorting or ranges starting from left most column) or hash tables (allowing for selection starting from left most column).
Where the other index types are general-purpose, a FULLTEXT index is specialised, in that it...
Please explain the exec() function and its family
...ed by the caller
You can mix them, therefore you have:
int execl(const char *path, const char *arg, ...);
int execlp(const char *file, const char *arg, ...);
int execle(const char *path, const char *arg, ..., char * const envp[]);
int execv(const char *path, char *const argv[]);
int execvp(const...
Setting a timeout for socket operations
... like:
Socket socket = new Socket();
socket.connect(new InetSocketAddress(ipAddress, port), 1000);
Quoting from the documentation
connect
public void connect(SocketAddress endpoint, int timeout) throws IOException
Connects this socket to the server with a specified timeout value. A t...
How to configure a HTTP proxy for svn
... @ErikMitchell: Create two versions of the config file and scripts which allow you to switch. Read your OSs docs how to hook into the network discovery mechanism and execute the correct script when your laptop notices where it is.
– Aaron Digulla
O...