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Is there documentation for the Rails column types?
... captured via textarea, use Text. For input using textfields, use string.
Integer:
Whole numbers
Float:
Decimal numbers stored with floating point precision
Precision is fixed, which can be problematic for some calculations; generally no good for math operations due to inaccurate rounding.
De...
When is the init() function run?
...suming you have this:
var WhatIsThe = AnswerToLife()
func AnswerToLife() int {
return 42
}
func init() {
WhatIsThe = 0
}
func main() {
if WhatIsThe == 0 {
fmt.Println("It's all a lie.")
}
}
AnswerToLife() is guaranteed to run before init() is called, and init() is guara...
What is mod_php?
... of using PHP as a module is speed - you will see a big speed boost if you convert from CGI to a module. Many people, particularly Windows users, do not realise this, and carry on using the php.exe CGI SAPI, which is a shame - the module is usually three to five times faster.
There is one key advant...
SQlite Getting nearest locations (with latitude and longitude)
... the fudge factor in radians and the columns in degrees? Shouldn't them be converted to the same unit?
– Rangel Reale
Dec 11 '12 at 18:46
1
...
Explain Morris inorder tree traversal without using stacks or recursion
...
This method can be used in places like converting a binary tree into linked list.
– cyber_raj
Aug 9 '16 at 19:03
...
Using Linq to group a list of objects into a new grouped list of list of objects
...ows you to iterate over the members of the group. As Lee mentions, you can convert each group to a list if you really want to, but if you're just going to iterate over them as per the code above, there's no real benefit in doing so.
...
Recommended date format for REST GET API
... timezone setting of user's device/browser.
Cons:
Extra processing for converting to UTC for storing in UTC format in the database.
Readability of input/output.
Readability of GET URLs.
Notes:
Timezones are a presentation-layer problem! Most of your code shouldn't be dealing with timezones o...
How to get the raw value an field?
... to set the value to an empty string if the input isn't a valid floating point number.
The value sanitization algorithm is as follows: If the value of the
element is not a valid floating-point number, then set it to the empty
string instead.
By specifying the type (<input type="number"&...
Why would adding a method add an ambiguous call, if it wouldn't be involved in the ambiguity
... object)
Candidate zero is obviously inapplicable because string is not convertible to string[]. That leaves three.
Of the three, we must determine a unique best method. We do so by making pairwise comparisons of the three remaining candidates. There are three such pairs. All of them have ident...
Output array to CSV in Ruby
...{ |csv, row| csv << CSV.generate_line(row) }.join(""))}
NOTE:
To convert an active record database to csv would be something like this I think
CSV.open(fn, 'w') do |csv|
csv << Model.column_names
Model.where(query).each do |m|
csv << m.attributes.values
end
end
H...