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How to declare Return Types for Functions in TypeScript
...eturn type is specified on the greet() function. Change the type to number and you'll get warnings.
class Greeter {
greeting: string;
constructor (message: string) {
this.greeting = message;
}
greet() : string {
return "Hello, " + this.greeting;
}
}
var greeter...
Get top n records for each group of grouped results
...have more than two groups, then you would need to specify the group number and add queries for each group:
(
select *
from mytable
where `group` = 1
order by age desc
LIMIT 2
)
UNION ALL
(
select *
from mytable
where `group` = 2
order by age desc
LIMIT 2
)
There are a variet...
When should I create a destructor?
...ned up eventually. (Maybe.)
If you make a destructor be extremely careful and understand how the garbage collector works. Destructors are really weird:
They don't run on your thread; they run on their own thread. Don't cause deadlocks!
An unhandled exception thrown from a destructor is bad news. ...
Convert hex color value ( #ffffff ) to integer value
...
The real answer is to use:
Color.parseColor(myPassedColor) in Android, myPassedColor being the hex value like #000 or #000000 or #00000000.
However, this function does not support shorthand hex values such as #000.
...
$.ajax - dataType
...ct.
Expecting JSON, or XML, or HTML, etc. The default is for jQuery to try and figure it out.
The $.ajax() documentation has full descriptions of these as well.
In your particular case, the first is asking for the response to be in UTF-8, the second doesn't care. Also the first is treating the...
How can I format patch with what I stash away
...changes. Is it possible that I can create a patch with what I stash away? And then apply that patch in some other repository (my co-worker's)?
...
Can a project have multiple origins?
...ository. You can configure a second remote, push to/pull from that remote, and setup some branches to track branches from that remote instead of origin.
Try adding a remote called "github" instead:
$ git remote add github https://github.com/Company_Name/repository_name.git
# push master to github...
Concatenate two string literals
... He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals).
...
How to hide databases that I am not allowed to access
...estriction' type in the name of your database(s) enclosed in single quotes and separated by spaces.
E.g.
'dback447'
Update for pgAdmin 4 - Do not use quotes, just the plain DB name.
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MySQL and GROUP_CONCAT() maximum length
... but when you use an other session, you need to repeat the SET SESSION command.
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