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How to validate an email address using a regular expression?
Over the years I have slowly developed a regular expression that validates MOST email addresses correctly, assuming they don't use an IP address as the server part.
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When do we have to use copy constructors?
...ar[strlen(another.stored) + 1];
strcpy( stored, another.stored );
}
void Class::operator = ( const Class& another )
{
char* temp = new char[strlen(another.stored) + 1];
strcpy( temp, another.stored);
delete[] stored;
stored = temp;
}
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How do iOS Push Notifications work?
...he service and receives notifications over this persistent connection. Providers connect with APNs through a persistent and secure channel while monitoring incoming data intended for their client applications. When new data for an application arrives, the provider prepares and sends a notification t...
Standard Android menu icons, for example refresh [closed]
The Android SDK offers the standard menu icons via android.R.drawable.X . However, some standard icons, such as ic_menu_refresh (the refresh icon), are missing from android.R .
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C# how to create a Guid value?
One field of our struct is Guid type. How to generate a valid value for it?
11 Answers
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Are querystring parameters secure in HTTPS (HTTP + SSL)? [duplicate]
...o encrypted with SSL. Nevertheless, as this article shows, it isn't a good idea to put sensitive information in the URL. For example:
URLs are stored in web server logs -
typically the whole URL of each
request is stored in a server log.
This means that any sensitive data in
the URL (e.g...
Index (zero based) must be greater than or equal to zero
....Text = String.Format("{2}", reader.GetString(0));
The token {2} is invalid because you only have one item in the parms. Use this instead:
Aboutme.Text = String.Format("{0}", reader.GetString(0));
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MySQL Like multiple values
...om jazkat answer submitted 5 years before yours?
– Vaidas
Sep 26 '17 at 8:20
@Vaidas - thank you - was asking myself t...
Multiple lines of input in
... And the textarea tag can't be self-closing. <textarea \> is invalid.
– Alex H
Jan 19 '15 at 13:03
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How to use NULL or empty string in SQL
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If you need it in SELECT section can use like this.
SELECT ct.ID,
ISNULL(NULLIF(ct.LaunchDate, ''), null) [LaunchDate]
FROM [dbo].[CustomerTable] ct
you can replace the null with your substitution value.
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