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Practical example where Tuple can be used in .Net 4.0?
...or the last 15 years. That's how expression bodied members were added, and now value tuples. Record-style classes narrowly missed the cut back in August (9 months before this comment) for this version of C# 7, and are probably coming out in C# 8. Also note that value tuples offer value equality wher...
How exactly does the callstack work?
...s stored in the EBP register. The offsets, on the other hand, are clearly known at compile time and are therefore hardcoded into the machine code.
This graphic from Wikipedia shows what the typical call stack is structured like1:
Add the offset of a variable we want to access to the address cont...
How to delete an item in a list if it exists?
... in iterable if item] if the first argument is None); in Python 3.x, it is now equivalent to (item for item in iterable if function(item)). The subtle difference is that filter used to return a list, now it works like a generator expression - this is OK if you are only iterating over the cleaned lis...
Uses for Optional
Having been using Java 8 now for 6+ months or so, I'm pretty happy with the new API changes. One area I'm still not confident in is when to use Optional . I seem to swing between wanting to use it everywhere something may be null , and nowhere at all.
...
rails i18n - translating text with links inside
...r}" if Rails.env.test?
nil
end
end
In the controller:
flash.now[:alert] = t("path.to.translation")
flash.now[:alert_link] = here_comes_the_link_path # or _url
In the locale.yml:
path:
to:
translation: "string with __link__ in the middle"
In the view:
<%= render_flash_me...
How to declare a structure in a header that is to be used by multiple files in c?
...een both usages (separate names and same names), and none has drawbacks I know of, so using the same name makes reading simpler if you don't use C separate "namespaces" for structs and other symbols.
share
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What's the best way to trim std::string?
...pp>
std::string str("hello world! ");
boost::trim_right(str);
str is now "hello world!". There's also trim_left and trim, which trims both sides.
If you add _copy suffix to any of above function names e.g. trim_copy, the function will return a trimmed copy of the string instead of modifying...
Why does Chrome incorrectly determine page is in a different language and offer to translate?
...p://www.w3.org/1999/xhtml">
UPDATE: previously a Google recommendation now deprecated spec although it may still help with Chrome. : meta http-equiv (as described above):
<meta http-equiv="Content-Language" content="en">
Use HTTP headers (not recommended based on cross-browser recogniti...
Get integer value from string in swift
...nger have the toInt() method as part of String. So this Int constructor is now the only way to convert strings to ints.
– Morgan Wilde
Jul 20 '15 at 22:41
1
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Why is #!/usr/bin/env bash superior to #!/bin/bash?
...bash 4) than it is for there to multiple env programs. ...Still true that knowing these differences does not lend well to beginners being able to delve in.
– Kevin
Jul 23 '19 at 15:10
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