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What does “not run” mean in R help pages?
...ometimes on an R help page the phrase "not run" appears in comments. Check out this from the help page for "with()":
5 Answ...
regex.test V.S. string.match to know if a string matches a regular expression
...
This is important! Going crazy trying to figure out why every other result was missing...for reference of anyone else that finds this: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Dan
Nov 10 '16 at 15:47
...
ElasticSearch - Return Unique Values
...0 }
}
}}
A search will return something like:
{
"took" : 16,
"timed_out" : false,
"_shards" : {
"total" : 2,
"successful" : 2,
"failed" : 0
},
"hits" : {
"total" : 1000000,
"max_score" : 0.0,
"hits" : [ ]
},
"aggregations" : {
"langs" : {
"buckets" : [ {
"key" : "10",
...
Python, remove all non-alphabet chars from string
... count program. Problem is that there are many non-alphabet chars strewn about in the data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
...
How can I default a parameter to Guid.Empty in C#?
...ad
public void Problem(Guid optional = new Guid())
{
// when called without parameters this will be true
var guidIsEmpty = optional == Guid.Empty;
}
You can also use default(Guid)
default(Guid) also will work exactly as new Guid().
Because Guid is a value type not reference type, so, defaul...
How to declare constant map
...such thing as a constant map. More information can be found here.
Try it out on the Go playground.
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Difference between == and ===
...rea, their instances are equal because their ssn numbers are equal. So the output will be the two instance are equal!
if person1 === person2 {
//It does not enter here
} else {
print("the two instances are not identical!")
}
=== operator checks if the references point the same instance, "id...
When to use references vs. pointers
...defined-behaviour-land;
the reference attribute version doesn't allow (without easy to spot tricks) the problem with 1.
the reference attribute version is simpler to understand for the user: you have to provide a valid object, not something that could be null.
If the behaviour of the function would...
Enabling markdown highlighting in Vim
...d to, by default, be really garish - yellow background - so that it stands out. You can make this less visually striking by changing that highlight rule. One quick way to do this would be something like:
:hi link mkdLineBreak Underlined
Now those end-of-line spaces will show up as underlined. Try...
JRuby on Rails vs. Ruby on Rails, what's difference?
I'm looking to try out JRuby and JRuby on Rails. I'm having trouble finding information on what's difference between JRuby on Rails and Ruby on Rails.
...