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Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
I have a stylesheet that loads images from an external domain and I need it to load from https:// from secure order pages and http:// from other pages, based on the current URL. I found that starting the URL with a double slash inherits the current protocol. Do all browsers support this technique?...
How do I remove code duplication between similar const and non-const member functions?
...a detailed explanation, please see the heading "Avoid Duplication in const and Non-const Member Function," on p. 23, in Item 3 "Use const whenever possible," in Effective C++, 3d ed by Scott Meyers, ISBN-13: 9780321334879.
Here's Meyers' solution (simplified):
struct C {
const char & get()...
Using MVC HtmlHelper extensions from Razor declarative views
...tations that
impact certain MVC scenarios (for
example: no access to standard MVC
Html. helpers)
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Retain cycle on `self` with blocks
...'s no real alternative here. If you're designing your own block-based API, and it makes sense to do so, you could have the block get passed the value of self in as an argument. Unfortunately, this doesn't make sense for most APIs.
Please note that referencing an ivar has the exact same issue. If yo...
Parcelable encountered IOException writing serializable object getactivity()
...t.DSLL$DNode
Your DSLL class appears to have a DNode static inner class, and DNode is not Serializable.
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Get environment variable value in Dockerfile
...that users can pass at build-time to the builder with the docker build command using the --build-arg <varname>=<value> flag.
So your Dockerfile will have this line:
ARG request_domain
or if you'd prefer a default value:
ARG request_domain=127.0.0.1
Now you can reference this vari...
How can I get jQuery to perform a synchronous, rather than asynchronous, Ajax request?
I have a JavaScript widget which provides standard extension points. One of them is the beforecreate function. It should return false to prevent an item from being created.
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How can I generate an MD5 hash?
...
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation with md.digest(bytes).
Feed the MessageDigest one byte[] chunk at a time by calling md.update(bytes). When you're done adding input bytes, calculate the hash with
md.digest().
The by...
Java: Literal percent sign in printf statement
I'm trying to add an actual percent sign into a printf statement in Java and I'm getting the error:
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Save image from URL by paperclip
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For security, you should whitelist the URI's scheme and blacklist private hosts
– John Douthat
Jan 7 '14 at 17:56
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