大约有 47,000 项符合查询结果（耗时：0.0683秒） [XML]
to remove first and last element in array
...
fruits.shift(); // Removes the first element from an array and returns only that element.
fruits.pop(); // Removes the last element from an array and returns only that element.
See all methods for an Array.
...
Get the latest record from mongodb collection
...
Yet another way of getting the last item from a MongoDB Collection (don't mind about the examples):
> db.collection.find().sort({'_id':-1}).limit(1)
Normal Projection
> db.Sports.find()
{ "_id" : ObjectId("5bfb5f82dea65504b456ab12"), "Type" : "NFL", "Head"...
Inheriting from a template class in c++
...a is not a template class, but a class template. That is, it is a template from which classes can be generated. Area<int> is such a class (it's not an object, but of course you can create an object from that class in the same ways you can create objects from any other class). Another such clas...
How to move Jenkins from one PC to another
...cked on some node the URLs there are pointing to old jenkins as below: Run from slave command line: javaws old-jenkins-server:8080/computer/slaveMachine1/slave-agent.jnlp Or if the slave is headless: java -jar slave.jar -jnlpUrl old-jenkins-server:8080/computer/slaveMachine1/slave-agent.jnlp Now ...
Do interfaces inherit from Object class in java
Do interfaces inherit from Object class in Java?
7 Answers
7
...
How can I strip first X characters from string using sed?
...ble containing the text pid: 1234 and I want to strip first X characters from the line, so only 1234 stays. I have more variables I need to "clean", so I need to cut away X first characters and ${string:5} doesn't work for some reason in my system.
...
How to subtract a day from a date?
...
You can use a timedelta object:
from datetime import datetime, timedelta
d = datetime.today() - timedelta(days=days_to_subtract)
share
|
improve this ans...
Upgrading PHP in XAMPP for Windows?
...grade PHP in Xampp for Windows? I tried to download the latest PHP version from the main PHP site but when I check (phpinfo) I still get that the previous version is still in use.
...
How to save an image locally using Python whose URL address I already know?
...
A good way to get filename from link is filename = link.split('/')[-1]
– heltonbiker
Jul 5 '12 at 19:20
2
...
How can I call a custom Django manage.py command directly from a test driver?
...n on a database table. How would I invoke the management command directly from code?
5 Answers
...