大约有 23,000 项符合查询结果（耗时：0.0356秒） [XML]
NumPy or Pandas: Keeping array type as integer while having a NaN value
...un into issues that join columns are converted into either ints or floats, based on the existence of a NA value in the original list. (Creating issues later on when trying to merge these dataframes)
– Carst
Jul 23 '13 at 21:36
...
如果携程决心战略性亏损到底，去哪儿怕是只剩一条路可走 - 资讯 - 清泛网 -...
...束在线旅游的价格战，回到市场的良性发展状态。
（图片来源于：易观智库）
若携程与去哪儿合并，二者将占据在线旅游市场58.5%的市场份额，远远高于行业第三名的阿里去啊
合并可霸占大交通62.8%的市场份额，酒店76.3%...
How do I convert an integer to binary in JavaScript?
...work because you are getting the input from text. Use this: function decToBase(dec, base){ return parseInt(dec).toString(base); } alert(decToBase(dec, 2));
– Magus
May 29 '15 at 13:47
...
Basic HTTP authentication with Node and Express 4
... '').split(' ')[1] || ''
const [login, password] = Buffer.from(b64auth, 'base64').toString().split(':')
// Verify login and password are set and correct
if (login && password && login === auth.login && password === auth.password) {
// Access granted...
return n...
How do I decode HTML entities in Swift?
...("20ac", 16) --> "€"
func decodeNumeric(_ string : Substring, base : Int) -> Character? {
guard let code = UInt32(string, radix: base),
let uniScalar = UnicodeScalar(code) else { return nil }
return Character(uniScalar)
}
// De...
How to detect Windows 64-bit platform with .NET?
...plex.com/SourceControl/changeset/view/39074#842775 .I also have a solution based on that code listed at the bottom of this page, that uses extension methods if you care about reusing the code.
– dmihailescu
Feb 2 '11 at 18:29
...
google oauth2 redirect_uri with several parameters
...a json string of your parameters ->
{ "a" : "b" , "c" : 1 }
/2. do a base64UrlEncode , to make it URL safe ->
stateString = base64UrlEncode('{ "a" : "b" , "c" : 1 }');
This is a PHP example of base64UrlEncoding & decoding (http://en.wikipedia.org/wiki/Base64#URL_applications) :
fu...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...
以UserCF的推荐算法为例，官方建议我们的开发过程：
图片摘自Mahout in Action
从上图中我们可以看到，算法是被模块化的，通过1,2,3,4的过程进行方法调用。
程序代码：
public class UserCF {
final static int NEIGHBORHOOD_NUM = 2;
...
Virtual Memory Usage from Java under Linux, too much memory used
...ng-standing complaint with Java, but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 giga...
Where do I find old versions of Android NDK? [closed]
...d .exe for windows
Since r11:
.zip for linux and OS X as well, a new URL base, and no 32 bit versions for OS X and linux.
https://dl.google.com/android/repository/android-ndk-r11-linux-x86_64.zip
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