大约有 45,000 项符合查询结果（耗时：0.0621秒） [XML]
How to know if an object has an attribute in Python
...
Try hasattr():
if hasattr(a, 'property'):
a.property
EDIT: See zweiterlinde's answer below, who offers good advice about asking forgiveness! A very pythonic approach!
The general practice in python is that, if the property is likely to be there most of the time, simply call it ...
Makefiles with source files in different directories
...
The traditional way is to have a Makefile in each of the subdirectories (part1, part2, etc.) allowing you to build them independently. Further, have a Makefile in the root directory of the project which builds everything. The "root"...
Inline SVG in CSS
Is it possible to use an inline SVG definition in CSS?
9 Answers
9
...
Find the last element of an array while using a foreach loop in PHP
I am writing a SQL query creator using some parameters. In Java, it's very easy to detect the last element of an array from inside the for loop by just checking the current array position with the array length.
...
Check if a user has scrolled to the bottom
...= $(document).height()) {
alert("bottom!");
}
});
You can test it here, this takes the top scroll of the window, so how much it's scrolled down, adds the height of the visible window and checks if that equals the height of the overall content (document). If you wanted to instead check i...
No tests found with test runner 'JUnit 4'
...st happened to me. Rebuilding or restarting Eclipse didn't help.
I solved it by renaming one of the test methods to start with "test..." (JUnit3 style) and then all tests are found. I renamed it back to what it was previously, and it still works.
...
Effective method to hide email from spam bots
...
Working with content and attr in CSS:
.cryptedmail:after {
content: attr(data-name) "@" attr(data-domain) "." attr(data-tld);
}
<a href="#" class="cryptedmail"
data-name="info"
data-domain="example"
data-tld=...
Why doesn't JUnit provide assertNotEquals methods?
Does anybody know why JUnit 4 provides assertEquals(foo,bar) but not assertNotEqual(foo,bar) methods?
11 Answers
...
Get the name of an object's type
... way or another:
Here is a hack that will do what you need - be aware that it modifies the Object's prototype, something people frown upon (usually for good reason)
Object.prototype.getName = function() {
var funcNameRegex = /function (.{1,})\(/;
var results = (funcNameRegex).exec((this).cons...
Why use AJAX when WebSockets is available?
...reate an Agile project management tool for my final year project at University utilizing Node server and WebSockets. I found using WebSockets provided a 624% increase in the number of requests per second my application could process.
...