大约有 9,000 项符合查询结果（耗时：0.0384秒） [XML]
On delete cascade with doctrine2
..., you configure the @JoinColumn with
the onDelete="CASCADE" option.
<?php
namespace Entities;
use Doctrine\Common\Collections\ArrayCollection;
/**
* @Entity
* @Table(name="contacts")
*/
class Contact
{
/**
* @Id
* @Column(type="integer", name="contact_id")
* @Gener...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
... if guard => statements
case pattern => statements
}
try {
block
} catch {
case pattern if guard => statements
case pattern => statements
} finally {
block
}
You cannot use case statements in any other context. So, if you want to use case, you need curly braces. I...
Why doesn't Java allow to throw a checked exception from static initialization block?
...esn't Java allow to throw a checked exception from a static initialization block? What was the reason behind this design decision?
...
A non-blocking read on a subprocess.PIPE in Python
...t to its output stream (standard output). I want to be able to execute non-blocking reads on its standard output. Is there a way to make .readline non-blocking or to check if there is data on the stream before I invoke .readline ? I'd like this to be portable or at least work under Windows and Linu...
How can I control the width of a label tag?
...
Using CSS, of course...
label { display: block; width: 100px; }
The width attribute is deprecated, and CSS should always be used to control these kinds of presentational styles.
share
...
File Upload using AngularJS
...file', element[0].files[0]);
httpPostFactory('upload_image.php', formData, function (callback) {
// recieve image name to use in a ng-src
console.log(callback);
});
});
}
};
});
app.factory('httpPostFac...
How to apply bindValue method in LIMIT clause?
...
Thanks! But in PHP 5.3, the above code threw an error saying "Fatal error: Cannot pass parameter 2 by reference". It doesn't like casting an int there. Instead of (int) trim($_GET['skip']), try intval(trim($_GET['skip'])).
...
How to comment out a block of Python code in Vim
...
@rishabh-manocha: use visual block (Ctrl-V) to select all the added # and type x to delete them.
– theosp
Apr 1 '10 at 16:18
3
...
Encrypt & Decrypt using PyCrypto AES 256
...ss AESCipher(object):
def __init__(self, key):
self.bs = AES.block_size
self.key = hashlib.sha256(key.encode()).digest()
def encrypt(self, raw):
raw = self._pad(raw)
iv = Random.new().read(AES.block_size)
cipher = AES.new(self.key, AES.MODE_CBC, iv)...
Keyboard shortcut to comment lines in Sublime Text 2
...x/Windows for an English keyboard the shortcut is Ctrl+Shift+/ to toggle a block comment, and Ctrl+/ to toggle a line comment.
If you go into Preferences->Key Bindings - Default, you can find all the shortcuts, below are the lines for commenting.
{ "keys": ["ctrl+/"], "command": "toggle_comment...