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How do I print the type of a variable in Rust?
...f a variable and are willing to do it at compile time, you can cause an error and get the compiler to pick it up.
For example, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = x; would work too
error[E0308]: mismatched types
--> src/main.rs:2:29
|
2...
Rollback a Git merge
...mmit has been exhaustively covered in other questions. When you do a fast-forward merge, the second one you describe, you can use git reset to get back to the previous state:
git reset --hard <commit_before_merge>
You can find the <commit_before_merge> with git reflog, git log, or, if...
RabbitMQ message size and types
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Theoretically anything can be stored/sent as a message. You actually don't want to store anything on the queues. The system works most efficiently if the queues are empty most of the time. You can send anything you want to th...
Best way to write to the console in PowerShell
...alls out of a pipeline without being picked up by another pipeline element or being assigned to a variable (or redirected) into Out-Host. What Out-Host does is obviously host-dependent.
Just letting things fall out of the pipeline is not a substitute for Write-Host which exists for the sole reason ...
Setting the default Java character encoding
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Unfortunately, the file.encoding property has to be specified as the JVM starts up; by the time your main method is entered, the character encoding used by String.getBytes() and the default constructors of InputStreamReader and ...
Splitting on first occurrence
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From the docs:
str.split([sep[, maxsplit]])
Return a list of the words in the string, using sep as the delimiter string. If maxsplit is given, at most maxsplit splits are done (thus, the list will have at most maxsplit+1 elements).
s.split('mango', 1)[1]
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How to go about formatting 1200 to 1.2k in java
I'd like to format following numbers into the numbers next to them with java:
23 Answers
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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
...as Quartermeister demonstrates; dynamic might implement a weird true operator which might cause y to never be initialized.
Here's a minimal repro:
class Program
{
static bool M(out int x)
{
x = 123;
return true;
}
static int N(dynamic d)
{
int y;
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How to convert a string of numbers to an array of numbers?
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My 2 cents for golfers:
b="1,2,3,4".split`,`.map(x=>+x)
backquote is string litteral so we can omit the parenthesis (because of the nature of split function) but it is equivalent to split(','). The string is now an array, we just h...
How do I Geocode 20 addresses without receiving an OVER_QUERY_LIMIT response?
... unless I time them to be ~1 second apart, but then it takes 20 seconds before my markers are all placed.
6 Answers
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