大约有 5,475 项符合查询结果（耗时：0.0302秒） [XML]
Vertically centering a div inside another div [duplicate]
...nner {
position: absolute;
top: 50%;
left: 50%;
width: 100px;
height: 100px;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
background: red;
}
<div class="cn">
<div class="inner">
test
<...
Is Big O(logn) log base e?
... @Kinopiko: OK. I think we are saying the same thing. I would say O(100) = O(1) because O(100) = O(100 * 1) = O(C * 1) = O(1). Which is what I meant by constant expressions being superfluous. That is, the order of any constant is 1.
– Daniel Pryden
Oct...
Custom thread pool in Java 8 parallel stream
...parallelism", "20");
s.parallel().forEach(i -> {
try { Thread.sleep(100); } catch (Exception ignore) {}
System.out.print((System.currentTimeMillis() - start) + " ");
});
The output is:
215 216 216 216 216 216 216 216 315 316 316 316 316 316 316 316 415 416 416 416
So you can see t...
Short description of the scoping rules?
...scope:
from __future__ import print_function # for python 2 support
x = 100
print("1. Global x:", x)
class Test(object):
y = x
print("2. Enclosed y:", y)
x = x + 1
print("3. Enclosed x:", x)
def method(self):
print("4. Enclosed self.x", self.x)
print("5. Globa...
When should I use Struct vs. OpenStruct?
...
Other benchmark:
require 'benchmark'
require 'ostruct'
REP = 100000
User = Struct.new(:name, :age)
USER = "User".freeze
AGE = 21
HASH = {:name => USER, :age => AGE}.freeze
Benchmark.bm 20 do |x|
x.report 'OpenStruct slow' do
REP.times do |index|
OpenStruct.new(:na...
Perform debounce in React.js
... super(props);
this.method = debounce(this.method.bind(this),1000);
}
method() { ... }
}
ES5
var SearchBox = React.createClass({
method: function() {...},
componentWillMount: function() {
this.method = debounce(this.method.bind(this),100);
},
});
See JsF...
css z-index lost after webkit transform translate3d
...50px);
}
#element_b {
-webkit-transform: translate3d(0, 0, 100px);
}
#element_a:hover {
-webkit-transform: translate3d(100px, 0, 60px);
}
#element_b:hover {
-webkit-transform: translate3d(-100px, 0, -60px);
}
</style>
<body>
<d...
How to print colored text in Python?
... windows (provided you use ANSICON, or in Windows 10 provided you enable VT100 emulation). There are ansi codes for setting the color, moving the cursor, and more.
If you are going to get complicated with this (and it sounds like you are if you are writing a game), you should look into the "curses"...
How can I clone an SQL Server database on the same server in SQL Server 2008 Express?
..._log nvarchar(50);
DECLARE @destDb nvarchar(50);
DECLARE @destMdf nvarchar(100);
DECLARE @destLdf nvarchar(100);
DECLARE @sqlServerDbFolder nvarchar(100);
SET @sourceDb = 'db1'
SET @sourceDb_log = @sourceDb + '_log'
SET @backupPath = 'E:\tmp\' + sourceDb + '.bak' --ATTENTION: file must already exis...
CSS vertical alignment text inside li
...is pretty standard and I don't consider it a "hack". Just add line-height: 100px to your ul.catBlock li and it will be fine.
In this case you may have to add it to ul.catBlock li a instead since all of the text inside the li is also inside of an a. I have seen some weird things happen when you do t...