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Converting between strings and ArrayBuffers
... by adding methods to the object StringView.prototype
to create a collection of methods for such string-like objects (since now: stringViews) which work strictly on arrays of numbers
rather than on creating new immutable JavaScript strings
to work with Unicode encodings other than JavaScript's...
Getting image dimensions without reading the entire file
Is there a cheap way to get the dimensions of an image (jpg, png, ...)? Preferably, I would like to achieve this using only the standard class library (because of hosting restrictions). I know that it should be relatively easy to read the image header and parse it myself, but it seems that something...
How to run a program without an operating system?
...nd it runs the program that is on the drive)?
General answer to the question: it can be done.
It's often referred to as "bare metal programming".
To read from flash drive, you want to know what's USB, and you want to have some driver to work with this USB. The program on this drive would also have...
Getting the folder name from a path
... that you check the actual path to see if a file/folder exists at the location first. In that case, Dan Dimitru's answer may be more appropriate.
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Print number of keys in Redis
...
You can issue the INFO command, which returns information and statistics about the server. See here for an example output.
As mentioned in the comments by mVChr, you can use info keyspace directly on the redis-cli.
redis> INFO
# Server
redis_version:6.0.6
redis_git_sha1:00000...
Parcelable encountered IOException writing serializable object getactivity()
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Caused by: java.io.NotSerializableException: com.resources.student_list.DSLL$DNode
Your DSLL class appears to have a DNode static inner class, and DNode is not Serializable.
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What exactly does stringstream do?
...ther numerical types. The usage of stringstream is similar to the usage of iostream, so it is not a burden to learn.
Stringstreams can be used to both read strings and write data into strings. It mainly functions with a string buffer, but without a real I/O channel.
The basic member functions of s...
LLVM vs clang on OS X
I have a question concerning llvm, clang, and gcc on OS X.
3 Answers
3
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How do you use NSAttributedString?
...or] range:NSMakeRange(11,5)];
typed in a browser. caveat implementor
Obviously you're not going to hard-code in the ranges like this. Perhaps instead you could do something like:
NSDictionary * wordToColorMapping = ....; //an NSDictionary of NSString => UIColor pairs
NSMutableAttributedStri...
How does facebook, gmail send the real time notification?
... does this is pretty interesting.
A common method of doing such notifications is to poll a script on the server (using AJAX) on a given interval (perhaps every few seconds), to check if something has happened. However, this can be pretty network intensive, and you often make pointless requests, be...