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What is a regular expression which will match a valid domain name without a subdomain?
...omething that you're libel to run into unless using it for internal sites, etc... A quick attempt to allow it to support more subdomains: /^((?!-))(xn--)?[a-z0-9][a-z0-9-_]{0,61}[a-z0-9]{0,}\.?((xn--)?([a-z0-9\-.]{1,61}|[a-z0-9-]{1,30})\.?[a-z]{2,})$/i
– stakolee
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Byte[] to InputStream or OutputStream
...of data which may need special types of conversions (character, encrypted, etc). let's pretend you want to write this data as is to a file.
firstly you could create a ByteArrayInputStream which is basically a mechanism to supply the bytes to something in sequence.
then you could create a FileOutpu...
Why do we always prefer using parameters in SQL statements?
...ee SET salary = 9999999 WHERE empID = 10; --
1; DROP TABLE employee; --
// etc.
When you execute this query, it will perform a SELECT and an UPDATE or DROP, or whatever they wanted. The -- at the end simply comments out the rest of your query, which would be useful in the attack if you were concat...
How to list all properties of a PowerShell object
...it shows loads of properties like Status , PowerManagementCapabilities , etc. However, when in PowerShell I do the below I only get back a couple:
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How to install Android SDK Build Tools on the command line?
...want:
android update sdk --filter tools,platform-tools,build-tools-19.0.3 etc
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What are CFI directives in Gnu Assembler (GAS) used for?
...lso there are wide varities of these ex., .cfi_startproc , .cfi_endproc etc.. more here .
4 Answers
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How to use Namespaces in Swift?
...eted about namespacing.
Namespacing is implicit in Swift, all classes (etc) are implicitly
scoped by the module (Xcode target) they are in. no class prefixes
needed
Seems to be very different what I have been thinking.
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Select N random elements from a List in C#
...s to avoid collisions. Next take r = rand % (n-2), and do the same thing, etc. until you have k distinct elements in s. This has worst-case running time O(k^2). So for k << n, this can be faster. If you keep s sorted and track which contiguous intervals it has, you can implement it in O(k ...
Getting output of system() calls in Ruby
...ns where you pass a string containing user provided values to system, %x[] etc. are unsafe! Unsafe actually means: the user may trigger code to run in the context and with all permissions of the program.
As far as I can say only system and Open3.popen3 do provide a secure/escaping variant in Ruby 1...
Prevent tabstop on A element (anchor link) in HTML
...erlink goes against accessibility rules (e.g. people using screen readers, etc). If you know that this isn't a problem for your user base, then it should be fine.
– Ricardo Sanchez
Mar 29 '18 at 0:27
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