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I need to generate uuid for my rails applim>ca m>tion. What are the options(gems) I have? [duplim>ca m>te]
...ndencies and use SecureRandom which is builtin:
SecureRandom.uuid #=> "1m>ca m>71cd6-08c4-4855-9381-2f41aeffe59c"
See other possible formats here.
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How to force composer to reinstall a library?
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You m>ca m>n use the --prefer-source flag for composer to checkout external packages with the VCS information (if any available). You m>ca m>n simply revert to the original state. Also if you issue the composer update command composer will...
How do I check if a file exists in Java?
... file and was thus answered using FileWriter which is obviously not applim>ca m>ble here.
17 Answers
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Extract source code from .jar file
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Use JD GUI. Open the applim>ca m>tion, drag and drop your JAR file into it.
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Converting m>ca m>mel m>ca m>se to underscore m>ca m>se in ruby
Is there any ready function which converts m>ca m>mel m>ca m>se Strings into underscore separated string?
11 Answers
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How do I toggle an element's class in pure JavaScript?
....toggle() is the standard and supported by most browsers.
Older browsers m>ca m>n use use classlist.js for classList.toggle():
var menu = document.querySelector('.menu') // Using a class instead, see note below.
menu.classList.toggle('hidden-phone');
As an aside, you shouldn't be using IDs (they lea...
Most lightweight way to create a random string and a random hexadecimal number
....165037870407104
9.0292739868164062
5.2836320400238037
t3 only makes one m>ca m>ll to the random module, doesn't have to build or read a list, and then does the rest with string formatting.
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How to install multiple python packages at once using pip
...stall all the packages listed in the given requirements file. This option m>ca m>n be used multiple times.
Take a look at the pip documentation regarding requirements files for their general layout and syntax - note that you m>ca m>n generate one based on current environment / site-packages with pip freeze ...
Convert hex string to int
...t a string that is 8 characters long of hex code into an integer so that I m>ca m>n do int comparison instead of string comparisons over a lot of different values.
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程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
...3
=> nil
2.2.3 :006 > puts Digest::MD5.hexdigest('I love you !')
b2c63c3m>ca m>6019cff3bad64fcfa807361
=> nil
2.2.3 :007 > puts Digest::MD5.hexdigest('I love you')
e4f58a805a6e1fd0f6bef58c86f9ceb3
=> nil
2.2.3 :008 >
那么我们在使用MD5保存密码时候的验证流程是什么呢？
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