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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...
How to wait for all goroutines to finish without using time.Sleep?
...s code selects all xml files in the same folder, as the invoked executable and asynchronously applies processing to each result in the callback method (in the example below, just the name of the file is printed out).
...
Find merge commit which include a specific commit
...able anymore, you can show the merge commits in the history line between c and master:
git log <SHA-1_for_c>..master --ancestry-path --merges
This will however also show all the merges that happened after h, and between e and g on feature.
Comparing the result of the following commands:
...
Best way to replace multiple characters in a string?
...ent answers along with one extra.
With an input string of abc&def#ghi and replacing & -> \& and # -> \#, the fastest way was to chain together the replacements like this: text.replace('&', '\&').replace('#', '\#').
Timings for each function:
a) 1000000 loops, best of 3:...
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. ...
Illegal string offset Warning PHP
...
What about explaining why this works and why the OP's code doesn't? Answers like these are the main reason why people are sceptical of Stack Overflow, even though there are lots of people who are willing to explain every detail in their answers and actually crea...
Web API Put Request generates an Http 405 Method Not Allowed error
...ws Features to make sure I didn't have this thing called WebDAV installed, and it said I didn't. Anyways, I went ahead and placed the following in my web.config (both front end and WebAPI, just to be sure), and it works now. I placed this inside <system.webServer>.
<modules runAllManaged...
How do I specify unique constraint for multiple columns in MySQL?
... For those people using MySQL workbench: go to the Indexes tab and select UNIQUE as your type. Give your index a name and check the appropriate columns under the section "Index Columns"
– Pakman
Jun 3 '13 at 20:42
...
Collections.emptyList() vs. new instance
...ses where you do want to modify the returned list, Collections.emptyList() and List.of() are thus not a good choices.
I'd say that returning an immutable list is perfectly fine (and even the preferred way) as long as the contract (documentation) does not explicitly state differently.
In addition...