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What's the state of the art in email validation for Rails?
...you're going to send an email. If the email fails, you're going to get an error message. At which point you can tell the user "Sorry, your friend didn't receive that, would you like to try again?" or flag it for manual review, or just ignore it, or whatever.
These are the same options you'd have ...
Objective-C pass block as parameter
...
Example
-(void) saveWithCompletionBlock: (void (^)(NSArray *elements, NSError *error))completionBlock{
// your code
}
Other use of cases:
2. Block as a Property
Template
@property (nonatomic, copy) returnType (^blockName)(parameters);
Example
@property (nonatomic,copy)void (^compl...
The Web Application Project […] is configured to use IIS. The Web server […] could not be found.
...right-click on the web project and reload the project, I get the following error:
25 Answers
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Error installing mysql2: Failed to build gem native extension
...running bundle install or gem install mysql2 it gives me the following error:
27 Answers
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is there an easy way to get the http status code in the failure block from AFHTTPClient?
... with the operation object
failure:^(AFHTTPRequestOperation *operation, NSError *error){
NSLog(@"error code %d",[operation.response statusCode]);
}];
share
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improve this answer
|...
“Could not find bundler” error
When I try to do bundler update I get this error:
15 Answers
15
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How to use ADB Shell when Multiple Devices are connected? Fails with “error: more than one device an
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-d - Direct an adb command to the only attached USB device. Returns an error when more than one USB device is attached.
-e - Direct an adb command to the only running emulator. Returns an error when more than one emulator is running.
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How do you use variables in a simple PostgreSQL script?
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DOESN'T WORK FOR ME ERROR NEAR DO, I have also some functions between the begin and end with plpgsql language.
– Ash
Oct 31 '16 at 0:12
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Converting SVG to PNG using C# [closed]
...ion of the GIMP image editing program).
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool SetDllDirectory(string pathname);
[DllImport("libgobject-2.0-0.dll", SetLastError = true)]
static extern void g_type_init();
[DllImport("librsvg-2-2.dll", SetLastError = true)]
static exte...
How to make connection to Postgres via Node.js
...t; {
console.log(user.name); // print user name;
})
.catch(error => {
console.log(error); // print the error;
});
// alternative - new ES7 syntax with 'await':
// await db.one('SELECT name FROM users WHERE id = $1', [123]);
See also: How to correctly declare your da...