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How do I encode and decode a base64 string?
...se64Encode(string plainText) {
var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
return System.Convert.ToBase64String(plainTextBytes);
}
Decode
public static string Base64Decode(string base64EncodedData) {
var base64EncodedBytes = System.Convert.FromBase64String(base64Enco...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有一个用户和一条新闻。通过分析用户的行为以及新闻的文本内容,我们提取出数个关键字,如下图:
将这些关键字作为属性,把用户和新闻分解成向量,如下图:
之后再计算向量距离,便可以得出该用户和新闻的相似度了...
convert streamed buffers to utf8-string
... the binary contents to a string using a specific encoding. It defaults to utf8 if you don't provide a parameter, but I've explicitly set the encoding in this example.
var req = http.request(reqOptions, function(res) {
...
res.on('data', function(chunk) {
var textChunk = chunk.toSt...
How can I make SQL case sensitive string comparison on MySQL?
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@BT To make utf8 column case sensitive you could use bin colation like: SELECT 'email' COLLATE utf8_bin = 'Email'
– piotrekkr
Apr 23 '13 at 11:43
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Possible to do a MySQL foreign key to one of two possible tables?
...SONG tinyint(1) NOT NULL DEFAULT '1',SONG TITLE varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,DESCRIPTION varchar(1000) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,ARTIST varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT 'Άγνωστος καλλι...
How do I convert from BLOB to TEXT in MySQL?
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That's unnecessary. Just use SELECT CONVERT(column USING utf8) FROM..... instead of just SELECT column FROM...
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How can I search (case-insensitive) in a column using LIKE wildcard?
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SELECT *
FROM trees
WHERE trees.`title` COLLATE UTF8_GENERAL_CI LIKE '%elm%'
Actually, if you add COLLATE UTF8_GENERAL_CI to your column's definition, you can just omit all these tricks: it will work automatically.
ALTER TABLE trees
MODIFY COLUMN title VARCHAR(…) C...
Using PowerShell to write a file in UTF-8 without the BOM
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Using .NET's UTF8Encoding class and passing $False to the constructor seems to work:
$MyRawString = Get-Content -Raw $MyPath
$Utf8NoBomEncoding = New-Object System.Text.UTF8Encoding $False
[System.IO.File]::WriteAllLines($MyPath, $MyRawS...
How to get UTF-8 working in Java webapps?
...g:
CREATE DATABASE `ID_development`
/*!40100 DEFAULT CHARACTER SET utf8 COLLATE utf8_swedish_ci */;
Then, all of the tables need to be in UTF-8 also:
CREATE TABLE `Users` (
`id` int(10) unsigned NOT NULL auto_increment,
`name` varchar(30) collate utf8_swedish_ci default NULL
...
Effective way to find any file's Encoding
... 0xef && bom[1] == 0xbb && bom[2] == 0xbf) return Encoding.UTF8;
if (bom[0] == 0xff && bom[1] == 0xfe && bom[2] == 0 && bom[3] == 0) return Encoding.UTF32; //UTF-32LE
if (bom[0] == 0xff && bom[1] == 0xfe) return Encoding.Unicode; //UTF-16LE
...