大约有 15,000 项符合查询结果（耗时：0.0496秒） [XML]
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...::raw('CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP'));
Gotchas
MySQL
Starting with MySQL 5.7, 0000-00-00 00:00:00 is no longer considered a valid date. As documented at the Laravel 5.2 upgrade guide, all timestamp columns should receive a valid default value when you insert records into your d...
How to compare objects by multiple fields
... public int compare(Pizza p1, Pizza p2) {
return ComparisonChain.start().compare(p1.size, p2.size).compare(p1.nrOfToppings, p2.nrOfToppings).compare(p1.name, p2.name).result();
// or in case the fields can be null:
/*
return ComparisonChain.start()
...
Difference between jQuery parent(), parents() and closest() functions
...$(this).closest('div') and $(this).parents('div').eq(0)
Basically closest start matching element from the current element whereas parents start matching elements from parent (one level above the current element)
See http://jsfiddle.net/imrankabir/c1jhocre/1/
...
How to find out which view is focused?
...n e) {
e.printStackTrace();
}
}
}).start();
KOTLIN
Thread(Runnable {
var oldId = -1
while (true) {
val newView: View? = this.currentFocus
if (newView != null && newView.id != oldId) {
...
What is a stack trace, and how can I use it to debug my application errors?
...otstrap.main(Bootstrap.java:14)
This is a very simple stack trace. If we start at the beginning of the list of "at ...", we can tell where our error happened. What we're looking for is the topmost method call that is part of our application. In this case, it's:
at com.example.myproject.Book.getTi...
How can I verify if a Windows Service is running
... Service. When the device boots, this service typically takes some time to start. I'd like to check, from my code, if the service is running. How can I accomplish this?
...
Can I use jQuery with Node.js?
... parsing each question's page to get the list of involved users.
When you start following links, a callback hell can begin. To avoid that, you should use some kind of promises, futures or whatever. I always keep async in my toolbelt. So, here is a full example of a crawler using async:
var
url...
Abandoning changes without deleting from history
...
I actually disagree -- abandoning work on one head and starting over from a good starting point seems like a cleaner work pattern than using backouts. Especially since you cannot backout more than one changeset at a time.
– Martin Geisler
Se...
How to calculate the angle between a line and the horizontal axis?
...
First find the difference between the start point and the end point (here, this is more of a directed line segment, not a "line", since lines extend infinitely and don't start at a particular point).
deltaY = P2_y - P1_y
deltaX = P2_x - P1_x
Then calculate the...
Configure IIS Express for external access to VS2010 project
... line and check if there are any binding registration failure messages. To start from the command line, give this command:
iisexpress.exe /site:"your-site-name"
3 Finally you will need appropriate firewall entries. For this it is easiest to use the "Windows Firewall with Advanced Security" consol...