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How can I do division with variables in a Linux shell?
...ot use let; I find it much easier.
Here's an example you may find useful:
start=`date +%s`
# ... do something that takes a while ...
sleep 71
end=`date +%s`
let deltatime=end-start
let hours=deltatime/3600
let minutes=(deltatime/60)%60
let seconds=deltatime%60
printf "Time spent: %d:%02d:%02d\n" $...
Difference between app.use and app.get in express.js
...By specifying / as a "mount" path, app.use() will respond to any path that starts with /, which are all of them and regardless of HTTP verb used:
GET /
PUT /foo
POST /foo/bar
etc.
app.get(), on the other hand, is part of Express' application routing and is intended for matching and handling a sp...
In what order do static/instance initializer blocks in Java run?
...re's a walkthrough of what's happening in the example:
Enter main
Print "START"
Attempt to create first instance of Child, which requires initialization of Child
Attempting to initialize Child causes initialization of Parent
Attempting to initialize Parent causes initialization of Grandparent
At t...
Why are Subjects not recommended in .NET Reactive Extensions?
...do you achieve this with a class wrapping a Subject? You need some kind of Start method... how do you know when to call it? Or do you just always start it, even when no one is listening? And when you're done, how do you get it to stop reading from the socket/polling the database, etc? You have to ha...
BigDecimal setScale and round
...
See: "precision": The digit count starts from the leftmost nonzero digit of the exact result. docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html
– Eddy
Sep 6 '16 at 7:06
...
Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...ages and http:// from other pages, based on the current URL. I found that starting the URL with a double slash inherits the current protocol. Do all browsers support this technique?
...
How to detect Windows 64-bit platform with .NET?
...
UPDATE: As Joel Coehoorn and others suggest, starting at .NET Framework 4.0, you can just check Environment.Is64BitOperatingSystem.
IntPtr.Size won't return the correct value if running in 32-bit .NET Framework 2.0 on 64-bit Windows (it would return 32-bit).
As Microso...
Internal typedefs in C++ - good style or bad style?
...
Another vote for this being a good idea. I started doing this when writing a simulation that had to be efficient, both in time and space. All of the value types had an Ptr typedef that started out as a boost shared pointer. I then did some profiling and changed some...
Join/Where with LINQ and Lambda
...LINQ extension methods:
var id = 1;
var query = database.Posts // your starting point - table in the "from" statement
.Join(database.Post_Metas, // the source table of the inner join
post => post.ID, // Select the primary key (the first part of the "on" clause in an sql "join"...
Convert SQLITE SQL dump file to POSTGRESQL
...ed answer (and a good one at that +1), I think adding this is important.
I started looking into the solutions here and realized that I was looking for a more automated method. I looked up the wiki docs:
https://wiki.postgresql.org/wiki/Converting_from_other_Databases_to_PostgreSQL
and discovered pgl...