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How can I create directory tree in C++/Linux?
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With C++17 or later, there's the standard header <filesystem> with
function
std::filesystem::create_directories
which should be used in modern C++ programs.
The C++ standard functions do not have the POSIX-specific expli...
How do CDI and EJB compare? interact?
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CDI: it is about dependency injection. It means that you can inject interface implementation anywhere. This object can be anything, it can be not related to EJB. Here is an example of how to inject random generator using CDI. Ther...
“Add as Link” for folders in Visual Studio projects
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As this blogpost stated, it is possible.
<ItemGroup>
<Compile Include="any_abs_or_rel_path\**\*.*">
<Link>%(RecursiveDir)%(FileName)%(Extension)</Link>
</Compile>
</ItemGroup>
But be aware, the f...
Detecting when user scrolls to bottom of div with jQuery
I have a div box (called flux) with a variable amount of content inside.
This divbox has overflow set to auto.
14 Answers
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Is SHA-1 secure for password storage?
...onclusion: SHA-1 is as safe as anything against preimage attacks, however it is easy to compute, which means it is easier to mount a bruteforce or dictionary attack. (The same is true for successors like SHA-256.) Depending on the circumstances, a hash function which was designed to be computationa...
How to connect to SQL Server database from JavaScript in the browser?
...ent javascript to access databases for several reasons (bad practice, security issues, etc) but if you really want to do this, here is an example:
var connection = new ActiveXObject("ADODB.Connection") ;
var connectionstring="Data Source=<server>;Initial Catalog=<catalog>;User ID=<u...
Django - How to rename a model field using South?
...e', 'name')
The first argument of db.rename_column is the table name, so it's important to remember how Django creates table names:
Django automatically derives the name of the database table from the name of your model class and the app that contains it. A model's database table name is const...
How does UTF-8 “variable-width encoding” work?
The unicode standard has enough code-points in it that you need 4 bytes to store them all. That's what the UTF-32 encoding does. Yet the UTF-8 encoding somehow squeezes these into much smaller spaces by using something called "variable-width encoding".
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Is there a way to define a min and max value for EditText in Android?
I want to define a min and max value for an EditText .
24 Answers
24
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How to validate an email address using a regular expression?
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The fully RFC 822 compliant regex is inefficient and obscure because of its length. Fortunately, RFC 822 was superseded twice and the current specification for email addresses is RFC 5322. RFC 5322 leads to a regex that can be understood if studied for a few minutes and is efficient enough for ...