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What does the “Just” syntax mean in Haskell?
...ance of.
Functor provides a method called fmap, which maps functions that range over values from the base type (such as Integer) to functions that range over values from the lifted type (such as Maybe Integer). A function transformed with fmap to work on a Maybe value works like this:
case maybeVa...
How to run crontab job every week on Sunday
...your cron values you'll need to make sure that your values fall within the ranges. For instance, some cron's use a 0-7 range for the day of week where both 0 and 7 represent Sunday. We do not(check below).
Seconds: 0-59
Minutes: 0-59
Hours: 0-23
Day of Month: 1-31
Months: 0-11
Day of Week: 0-6
re...
Replace part of a string with another string
...a substring within a string (find), and a function to replace a particular range in a string with another string (replace), so you can combine those to get the effect you want:
bool replace(std::string& str, const std::string& from, const std::string& to) {
size_t start_pos = str.fi...
How to check if character is a letter in Javascript?
... solution based on a /[a-z]/i pattern, this trick will accept the complete range of Latin characters. Compared to the other solution containing a complete Latin Unicode upper-lower mapping, you save 99.2% in code size. It is misleading to call this solution "wrong", because it depends on your proble...
How do I write a for loop in bash
...
It's worth a mention that the range specified here is inclusive. By that, I mean you will see the entire range (1 to 10) printed to the console.
– Jamie
Feb 22 '16 at 22:28
...
How to manage REST API versioning with spring?
...ring runtime. To do so, you will have to:
Create a new annotation VersionRange.
Implement a RequestCondition<VersionRange>. Since you will have something like a best-match algorithm you will have to check whether methods annotated with other VersionRange values provide a better match for the...
How to determine CPU and memory consumption from inside a process?
... // cpuusage(void)
// ==============
// Return a CHAR value in the range 0 - 100 representing actual CPU usage in percent.
//----------------------------------------------------------------------------------------------------------------
CHAR cpuusage()
{
FILETIME ...
Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
...nteger
precision:
scale:
limit:
range: !ruby/range
begin: -2147483648
end: 2147483648
excl: true
title: &3 !ruby/object:ActiveRecord::Type::String
precision:
scale:
limit:
...
How to keep one variable constant with other one changing with row in excel
...the formula.
The easiest way to define a Name is to highlight the cell or range, then click on the Name box in the formula bar.
Then, if you named A0 "Rate" you can use that name like this:
=(B0+4)/(Rate)
See, much easier to read.
If you want to find Rate, click F5 and it appears in the GoTo ...
How to set DOM element as the first child?
... to append the fragment to a div . make your dom manipulation and then use Range.selectNodeContents() and Range.extractContents() to get back a fragment
– pery mimon
Feb 18 '18 at 23:17
...