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Possible to iterate backwards through a foreach?
...of Linq's own Reverse implementation, still, it was fun working this out.
https://msdn.microsoft.com/en-us/library/vstudio/bb358497(v=vs.100).aspx
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What's the difference between a Future and a Promise?
...eded.
For example take a look at how promises are defined in javascript:
https://promisesaplus.com/
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
The focus is on the composability using the then method like:
asyncOp1()
.then(function(op1Result){
// d...
Prevent BODY from scrolling when a modal is opened
...uces .modal-open on the body (so we can nuke the scroll there)
See this: https://github.com/twitter/bootstrap/pull/6342 - look at the Modal section.
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How to enable external request in IIS Express?
...why I wrote a simple proxy utility specifically for this kind of scenario: https://github.com/icflorescu/iisexpress-proxy.
Using the IIS Express Proxy, it all becomes quite simple – no need to “netsh http add urlacl url=vaidesg:8080/ user=everyone” or to mess up with your “applicationhost.c...
Remove the last line from a file in Bash
...or handling and some other features, you can use the poptail command here:
https://github.com/donm/evenmoreutils
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Determine the number of NA values in a column
... In counting amount of arbitrary value, other than NA is writing a boolean function is.value and then using sum(is.value(df$col)) the way to go or is there a more concise direct syntax for this?
– user3274289
Jun 4 '14 at 2:11
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Getting the first index of an object
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Just for fun this works in JS 1.8.5
var obj = {a: 1, b: 2, c: 3};
Object.keys(obj)[0]; // "a"
This matches the same order that you would see doing
for (o in obj) { ... }
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How do I extract text that lies between parentheses (round brackets)?
...e (sales)", @"\(([^)]*)\)").Groups[1].Value
As a response to the (very funny) comment, here's the same Regex with some explanation:
\( # Escaped parenthesis, means "starts with a '(' character"
( # Parentheses in a regex mean "put (capture) the stuff
# ...
How to check whether a file is empty or not?
...size() and stat() will throw an exception if the file does not exist. This function will return True/False without throwing (simpler but less robust):
import os
def is_non_zero_file(fpath):
return os.path.isfile(fpath) and os.path.getsize(fpath) > 0
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How do I specify a pointer to an overloaded function?
...he right one for you.)
With thanks to Miro Knejp for suggesting: see also https://groups.google.com/a/isocpp.org/d/msg/std-discussion/rLVGeGUXsK0/IGj9dKmSyx4J.
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