大约有 31,840 项符合查询结果（耗时：0.0481秒） [XML]
Get current URL of UIWebView
...
Matt's version is much cleaner. I recommend everyone to use that one instead of this
You could try this:
NSString *currentURL = [webView stringByEvaluatingJavaScriptFromString:@"window.location"];
...
Generate a random point within a circle (uniformly)
... A and C on the circumference vanishingly close to each other. We can pick one of these triangles simply by picking an angle theta. So we now need to generate a distance from the center by picking a point in the sliver ABC. Again, extend to ABCD, where D is now twice the radius from the circle cente...
Why not use HTTPS for everything?
...snail-mail post in a tamper-proof opaque envelope by Registered Mail? Someone from the Post Office would always have personal custody of it, so you could be pretty sure that no one is snooping on your mail. Obviously, the answer is that while some mail is worth the expense, most mail isn't. I don...
Using Java 8's Optional with Stream::flatMap
...hat it's somewhat inconvenient to turn an Optional<T> into a zero-or-one length Stream<T>. You could do this:
Optional<Other> result =
things.stream()
.map(this::resolve)
.flatMap(o -> o.isPresent() ? Stream.of(o.get()) : Stream.empty())
.findFi...
What is a reasonable code coverage % for unit tests (and why)? [closed]
...t.jsp?forum=106&thread=204677
Testivus On Test Coverage
Early one morning, a programmer asked
the great master:
“I am ready to write some unit tests. What code coverage should I aim
for?”
The great master replied:
“Don’t worry about coverage, just write some g...
How do I right align controls in a StatusStrip?
...tatusStrip.LayoutStyle == ToolStripLayoutStyle.Table (which is the default one)
– AZ.
Jul 31 '12 at 22:32
13
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Count number of rows within each group
...
I have done it, but it seems that I get 2 times each column except the one that is aggregated; so I have done a merge on them and it seems to be ok
– sop
May 18 '15 at 7:20
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Wolfram's Rule 34 in XKCD [closed]
...rns white/negative/0/false/whatever. The second least significant digit is one, so if the cell and its neighbors match rule 1 above, it turns black/positive/1/true/whatever`, etc. etc. until you see that, for rule 110, if a cell and its neighbors match rules 1,2,3,5,6, then the cell turns black. Oth...
Using LIMIT within GROUP BY to get N results per group?
..._IN_SET, that returns the position of the first argument inside the second one, eg.
SELECT FIND_IN_SET('2006', '2006,2003,2008,2001,2007,2009,2002,2004,2005,2000');
1
SELECT FIND_IN_SET('2009', '2006,2003,2008,2001,2007,2009,2002,2004,2005,2000');
6
Using a combination of GROUP_CONCAT and FIND_I...
Can we define implicit conversions of enums in c#?
...d below.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Resources;
namespace Ethica
{
using Reflection;
using Text;
[DebuggerDisplay("{Value} ({Name})")]
public abstrac...