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Measure elapsed time in Swift
...e(nanoTime) / 1_000_000_000 // Technically could overflow for long running tests
print("Time to evaluate problem \(problemNumber): \(timeInterval) seconds")
return theAnswer
}
Old answer
For Swift 1 and 2, my function uses NSDate:
// Swift 1
func evaluateProblem(problemNumber: Int, proble...
define() vs. const
...['param']; is invalid. Is const really compile time? I hardly think so... (tested on PHP 7.0.7)
– mcserep
Aug 4 '17 at 9:41
1
...
Generating an MD5 checksum of a file
...ay that is more complex, but memory efficient:
import hashlib
def hash_bytestr_iter(bytesiter, hasher, ashexstr=False):
for block in bytesiter:
hasher.update(block)
return hasher.hexdigest() if ashexstr else hasher.digest()
def file_as_blockiter(afile, blocksize=65536):
with a...
Easiest way to check for an index or a key in an array?
...Bash manual and the little note
if the colon is omitted, the operator tests only for existence [of parameter]
This answer is actually adapted from the answers for this SO question: How to tell if a string is not defined in a bash shell script?
A wrapper function:
exists(){
if [ "$2" !=...
How to replace a character by a newline in Vim
...minal to run it). xxd shows a hexdump of the resulting file.
echo bar > test
(echo 'Before:'; xxd test) > output.txt
vim test '+s/b/\n/' '+s/a/\r/' +wq
(echo 'After:'; xxd test) >> output.txt
more output.txt
Before:
0000000: 6261 720a bar.
After:
0000000:...
How does libuv compare to Boost/ASIO?
...ar-real-time applications. If hard numbers are desired, libuv's benchmark test may serve as a starting point.
Additionally, while profiling should be done to identify actual bottlenecks, be aware of memory allocations. For libuv, the memory allocation strategy is primarily limited to the allocato...
How to find where gem files are installed
... (whereas gem env) shows only the parent folder for the gems folder: /home/test/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0. There is a number of folders inside it and your gem may be located in almost any one of them - that's what bundle show <gemName> shows exactly (and gem env) does not.
...
Reading a file line by line in Go
...ing the case where the line is greater than the reader's buffer size.
I tested the various solutions suggested by writing a program to test the scenarios which are identified as problems in other answers:
A file with a 4MB line.
A file which doesn't end with a line break.
I found that:
The Sca...
in_array() and multidimensional array
...the code but it has an error - Parse error: parse error in C:\wamp\www\000_TEST\php\php.in_array\index.php on line 21 - which is if(in_array("Irix", $value) thanks.
– laukok
Nov 8 '10 at 21:51
...
How do I view cookies in Internet Explorer 11 using Developer Tools
...rowser should have with the network tool, but like a lot of devs i need to test functionality when a cookie goes missing or is corrupted.
– RhinoDevX64
Apr 11 '14 at 18:25
...