大约有 47,000 项符合查询结果(耗时:0.0409秒) [XML]

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What does character set and collation mean exactly?

...a symbol, the number 0 is the encoding for 'A', and the combination of all four letters and their encodings is a character set. Now, suppose that we want to compare two string values, 'A' and 'B'. The simplest way to do this is to look at the encodings: 0 for 'A' and 1 for 'B'. Be...
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Default template arguments for function templates

Why are default template arguments only allowed on class templates? Why can't we define a default type in a member function template? For example: ...
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Loading and parsing a JSON file with multiple JSON objects

... contains JSON per line, you are saved the headaches of trying to parse it all in one go or to figure out a streaming JSON parser. You can now opt to process each line separately before moving on to the next, saving memory in the process. You probably don't want to append each result to one list and...
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How to reference a file for variables using Bash?

I want to call a settings file for a variable, how can I do this in bash? 9 Answers 9 ...
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What is the difference between linear regression and logistic regression?

...e, and greater than 1 whereas probability can not. As regression might actually produce probabilities that could be less than 0, or even bigger than 1, logistic regression was introduced. Source: http://gerardnico.com/wiki/data_mining/simple_logistic_regression Outcome In linear regression, the...
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Get the name of the currently executing method

... the ':' is just the symbol symbol. :) just do __method__.to_s and it'll be the method name, nothing else – Lambart Sep 25 '13 at 23:39 ...
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Import a module from a relative path

... of modules with your script. I use this in production in several products and works in many special scenarios like: scripts called from another directory or executed with python execute instead of opening a new interpreter. import os, sys, inspect # realpath() will make your script run, even if ...
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Java Security: Illegal key size or default parameters?

... Most likely you don't have the unlimited strength file installed now. You may need to download this file: Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 6 Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 7 Download Ja...
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What is the { get; set; } syntax in C#?

I am learning ASP.NET MVC and I can read English documents, but I don't really understand what is happening in this code: 1...
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New Array from Index Range Swift

... Pedantic point, but this isn't really casting the Slice to an Array, but rather creating a new array from a slice. A cast would use the as operator: numbers as Array which would result in an error. – j b Jun 10 '14 at 9...