大约有 43,000 项符合查询结果(耗时:0.0715秒) [XML]

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Why do loggers recommend using a logger per class?

...ing: Log per class using System.Reflection; private static readonly ILog _logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); public void SomeMethod() { _logger.DebugFormat("File not found: {0}", _filename); } One logger per app (or similar) Logger.DebugFor...
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Finding median of list in Python

...mpleteness, @musiphil: only in python 2, and only if you haven't done from __future__ import division. – Chris L. Barnes Nov 6 '17 at 19:27 add a comment  |...
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PHP method chaining?

...turned object. <?php class fakeString { private $str; function __construct() { $this->str = ""; } function addA() { $this->str .= "a"; return $this; } function addB() { $this->str .= "b"; return $this; } ...
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Convert datetime object to a String of date only in Python

... If you want the time as well, just go with datetime.datetime.now().__str__() Prints 2019-07-11 19:36:31.118766 in console for me share | improve this answer | follo...
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How to define hash tables in Bash?

...are the answer by introducing the concepts: First, indirection. $ animals_moo=cow; sound=moo; i="animals_$sound"; echo "${!i}" cow Secondly, declare: $ sound=moo; animal=cow; declare "animals_$sound=$animal"; echo "$animals_moo" cow Bring them together: # Set a value: declare "array_$index=$...
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Unexpected character encountered while parsing value

...ion (screen shot below) JSON Parsing Code static readonly JsonSerializer _serializer = new JsonSerializer(); static readonly HttpClient _client = new HttpClient(); static async Task<T> GetDataObjectFromAPI<T>(string apiUrl) { using (var stream = await _client.GetStreamAsync(apiUrl...
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Escaping single quote in PHP when inserting into MySQL [duplicate]

... You should be escaping each of these strings (in both snippets) with mysql_real_escape_string(). http://us3.php.net/mysql-real-escape-string The reason your two queries are behaving differently is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). This mean...
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Difference between Convert.ToString() and .ToString()

... var arg = Request.Params.Get("__EVENTARGUMENT"); string _arg = Convert.ToString(arg); _arg is not returing String.Empty when arg is null. why? – vml19 Mar 12 '12 at 3:33 ...
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pytest: assert almost equal

...0.3], [0.6]]) leads to a TypeError. If found that Numpy's np.testing.assert_allclose([[0.1 + 0.2], [0.2 + 0.4]], [[0.3], [0.6]]) (see answer below) did work for this case. – Kurt Peek Sep 12 '17 at 10:35 ...
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Parameterize an SQL IN clause

...fun, this time, we'll use $ as the escape character. select ... where '|p_%t!r|' like '%|' + REPLACE(REPLACE(REPLACE( 'p_%t!r' ,'$','$$'),'%','$%'),'_','$_') + '|%' escape '$' I prefer this approach to escaping because it works in Oracle and MySQL as well as SQL Server. (I usually use the \ b...