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Why do assignment statements return a value?
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To my understanding, assignment s = "Hello"; should only cause "Hello" to be assigned to s, but the operation shouldn’t return any value.
Your understanding is 100% incorrect. Can you explain why you believe this false thing?
What is the reasoning behind...
What's the best way to trim std::string?
...be easiest:
#include <boost/algorithm/string.hpp>
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...
How to set an environment variable only for the duration of the script?
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with scripts it works but how about VAR1="hello" echo $VAR1 does not return anything?
– Zibri
Aug 7 '19 at 7:53
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How do you avoid over-populating the PATH Environment Variable in Windows?
...DIT 3: This simple test leads me to believe Ben Voigt is right.
set test1=hello
set test2=%test1%hello
set test1=bye
echo %test2%
At the end of this, you see output hellohello rather than byehello.
EDIT 4: In case you decide to use batch files to eliminate certain paths from %PATH%, you might be...
Delete an element from a dictionary
...
pop mutates the dictionary.
>>> lol = {"hello": "gdbye"}
>>> lol.pop("hello")
'gdbye'
>>> lol
{}
If you want to keep the original you could just copy it.
sha...
Android: how to draw a border to a LinearLayout
...parent"
android:layout_height="wrap_content"
android:text="Hello World, SOnich"
/>
[... more TextView ...]
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello World, SOnich"
/>...
How to stage only part of a new file with git?
...tive newfile
Simple demo:
mkdir /tmp/demo
cd /tmp/demo
git init .
echo hello > newfile
git update-index --add --cacheinfo 100644 $(git hash-object -w /dev/null) newfile
Hint If you're sure the 'empty' blob already exists in your git object database, you could hardcode the hash e69de29bb2d1...
What is getattr() exactly and how do I use it?
...; getattr(person, attr_name)
'Victor'
>>> getattr(person, 'say')('Hello')
Victor Hello
getattr will raise AttributeError if attribute with the given name does not exist in the object:
>>> getattr(person, 'age')
Traceback (most recent call last):
File "<stdin>", line 1, i...
How to write to Console.Out during execution of an MSTest test
...);
// or Trace.Listeners.Add(new ConsoleTraceListener());
Trace.WriteLine("Hello World");
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Private properties in JavaScript ES6 classes
...ctor(){
this.#property = "test";
}
#privateMethod() {
return 'hello world';
}
getPrivateMessage() {
return this.#privateMethod();
}
}
const instance = new Something();
console.log(instance.property); //=> undefined
console.log(instance.privateMethod); //=> undefined
...