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How to change the CHARACTER SET (and COLLATION) throughout a database?
Our previous programmer set the wrong collation in a table (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character.
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How to validate an email address in JavaScript
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Using regular expressions is probably the best way. You can see a bunch of tests here (taken from chromium)
function validateEmail(email) {
const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}...
How can I convert ereg expressions to preg in PHP?
...e to know an easy way to convert the old expressions to PCRE (Perl Compatible Regular Expressions) (preg) .
4 Answers
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程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...来说，就是指”Symantec Corporation”这个机构。
Not valid before, Not valid after (证书的有效期)
Public key (公钥)
这个我们在前面介绍公钥密码体制时介绍过，公钥是用来对消息进行加密的。
Subject (主题)
这个证书是发布给...
Could someone explain the pros of deleting (or keeping) unused code?
I have heard many times that unused code must be deleted from the project.
However it is not clear for me "why?".
11 Answer...
How do you create a Distinct query in HQL
Is there a way to create a Distinct query in HQL. Either by using the "distinct" keyword or some other method. I am not sure if distinct is a valid keywork for HQL, but I am looking for the HQL equivalent of the SQL keyword "distinct".
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Parse large JSON file in Nodejs
I have a file which stores many JavaScript objects in JSON form and I need to read the file, create each of the objects, and do something with them (insert them into a db in my case). The JavaScript objects can be represented a format:
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How to Implement DOM Data Binding in JavaScript
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How would binding work for objects?
How listening to change in the form might work?
An abstraction that updates both objects
I suppose there are other techniques, but ultimately I'd have an object that holds reference to a rela...
break out of if and foreach
...foreach loop and an if statement. If a match is found i need to ultimately break out of the foreach.
4 Answers
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How do I skip an iteration of a `foreach` loop?
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You want:
foreach (int number in numbers) // <--- go back to here --------+
{ // |
if (number < 0) // |
{ ...