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Get Base64 encode file-data from Input Form
...ipt.
The easy way:
The readAsDataURL() method might already encode it as base64 for you. You'll probably need to strip out the beginning stuff (up to the first ,), but that's no biggie. This would take all the fun out though.
The hard way:
If you want to try it the hard way (or it doesn't work),...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...a list of many others) is that it tends to artificially favor lookup table based solutions. Since the benchmark is repeating the one operation in a loop, it will often find that using a lookup table that just fits in L1 is the fastest, because everything will hit in L1 every time since there is no c...
Find out whether Chrome console is open
...
Based on this discovery I was able to find less-intrusive method. DevTools calls toString() on functions when printing them to console. So one can print a custom function object with toString() method override returning empty...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
..., these variables are not visible/reachable outside the function. See live demo.
Javascript has function scoping. "Parameters and variables defined in a function are not visible outside of the function, and that a variable defined anywhere within a function is visible everywhere within the function...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
...sh:~ mackie$ clang -v
Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)
Target: x86_64-apple-darwin11.2.0
Thread model: posix
The inner loop of clang's code looks like this:
.align 4, 0x90
LBB2_4: ## =>This Inner Loop Header: De...
jquery disable form submit on enter
...t/jQuery. While you can still use AJAX with this solution, it disables the base functionality of the submit method.
– JRad the Bad
Jan 19 '17 at 16:44
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How do I decode HTML entities in Swift?
...("20ac", 16) --> "€"
func decodeNumeric(_ string : Substring, base : Int) -> Character? {
guard let code = UInt32(string, radix: base),
let uniScalar = UnicodeScalar(code) else { return nil }
return Character(uniScalar)
}
// De...
rgdal package installation
...ibgdal1-dev libproj-dev
One tip that can be useful, still under a Debian based system, is to install the apt-file package and run :
$ sudo apt-file update
Then, when you get an error such as :
configure: error: proj_api.h not found in standard or given locations.
You can use the following co...
boost::flat_map and its performance compared to map and unordered_map
...cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able to find any performance comparisons. How does it compare and what are the best use cases for ...
How to check for a valid Base64 encoded string
Is there a way in C# to see if a string is Base 64 encoded other than just trying to convert it and see if there is an error? I have code code like this:
...