大约有 44,000 项符合查询结果（耗时：0.0398秒） [XML]
Foreign keys in mongo?
...xample:
student
{
name: 'Kate Monster',
addresses : [
{ street: '123 Sesame St', city: 'Anytown', cc: 'USA' },
{ street: '123 Avenue Q', city: 'New York', cc: 'USA' }
]
}
Child referencing
Like the student/course example above.
Parent referencing
Suitable for one-to-squillions,...
How to rename with prefix/suffix?
...
123
In Bash and zsh you can do this with Brace Expansion. This simply expands a list of items in ...
Why are only final variables accessible in anonymous class?
...s = new int[1];
Runnable r = new Runnable() { public void run() { res[0] = 123; } };
r.run();
System.out.println(res[0]);
// ...
share
|
improve this answer
|
follow
...
if/else in a list comprehension
... ternary operator ?: that exists in other languages. For example:
value = 123
print(value, 'is', 'even' if value % 2 == 0 else 'odd')
share
|
improve this answer
|
follow
...
Creating .pem file for APNS?
...elopment Push Services” > Export “Apple Development Push Services ID123″. Save this as apns-dev-cert.p12 file somewhere you can access it. There is no need to enter a password.
The next command generates the cert in Mac’s Terminal for PEM format (Privacy Enhanced Mail Security Certificate...
JavaScript file upload size validation
...
123
Using jquery:
<form action="upload" enctype="multipart/form-data" method="post">
U...
NoSql vs Relational database
...
123
Not all data is relational. For those situations, NoSQL can be helpful.
With that said, NoSQ...
display: inline-block extra margin [duplicate]
...
123
White space affects inline elements.
This should not come as a surprise. We see it every day ...
.gitignore and “The following untracked working tree files would be overwritten by checkout”
... I thought it would only remove it from git.
– tyegah123
Sep 29 '14 at 8:37
25
The -x option hurt...
Tracking the script execution time in PHP
...
123
Shorter version of talal7860's answer
<?php
// At start of script
$time_start = microtime(...