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How can I check if a URL exists via PHP?

...side. Waiting for a response might take time and block code execution. Not all headers returned by get_headers() are well formed. Use curl (if you can). Prevent fetching the entire body/content, but only request the headers. Consider redirecting urls: Do you want the first code returned? Or follow a...
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Execute bash script from URL

...the advantage of using that initial redirection? I ask because for RVM installation, they use the command: bash < <(curl -s https://rvm.beginrescueend.com/install/rvm) Why not just: bash <(curl -s https://rvm.beginrescueend.com/install/rvm) – Tristan ...
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How to parse JSON in Java

... Pshemo 109k1818 gold badges159159 silver badges232232 bronze badges answered Sep 25 '13 at 6:56 user1931858user1931858 8,73611...
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How can I count occurrences with groupBy?

...answered Jun 5 '17 at 21:37 user_3380739user_3380739 1,33999 silver badges1111 bronze badges ...
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Place cursor at the end of text in EditText

... There is a function called append for ediitext which appends the string value to current edittext value and places the cursor at the end of the value. You can have the string value as the current ediitext value itself and call append(); myeditte...
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What is the difference between screenX/Y, clientX/Y and pageX/Y?

...upper left. This point could be anywhere in the browser window and can actually change location if there are embedded scrollable pages embedded within pages and the user moves a scrollbar. screenX and screenY: Relative to the top left of the physical screen/monitor, this reference point only moves ...
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How do you enable “Enable .NET Framework source stepping”?

..." with a greyed out "Browse to find Source"). However, once you've made all the appropriate settings, you can use the following workaround. The workaround is essentially to find the security updates that caused the dll to change, and then remove them. This has the obvious downside of having tho...
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Configure Microsoft.AspNet.Identity to allow email address as username

... The C# version of this (in App_Code\IdentityModels.cs) is public UserManager() : base(new UserStore<ApplicationUser>(new ApplicationDbContext())) { UserValidator = new UserValidator<ApplicationUser>(this) { AllowOnlyAlphan...
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Can I change the color of auto detected links on UITextView?

...d the selected text color. iOS 7 also added a new property to UITextView called linkTextAttributes which would appear to let you fully control the link style. share | improve this answer |...
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Capitalize first letter. MySQL

...s not a native function but a user created function which MySQL version 5+ allows. If you have Super/Admin user status on MySQL or have a local mysql installation on your own computer you can create a FUNCTION (like a stored procedure) which sits in your database and can be used in all future SQL q...