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Case insensitive 'in'
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username = 'MICHAEL89'
if username.upper() in (name.upper() for name in USERNAMES):
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Alternatively:
if username.upper() in map(str.upper, USERNAMES):
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Or, yes, you can make a custom method.
s...
warning this call is not awaited, execution of the current method continues
...nc Task<string> GetNameAsync()
{
string firstname = await PromptForStringAsync("Enter your first name: ");
string lastname = await PromptForStringAsync("Enter your last name: ");
return firstname + lastname;
}
And use it as follows:
public static void DoStuff()
{
Task<str...
How to set custom favicon in Express?
I recently started working in Node.js and in the app.js file there is this line:
13 Answers
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\r\n, \r and \n what is the difference between them? [duplicate]
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\r = CR (Carriage Return) → Used as a new line character in Mac OS before X
\n = LF (Line Feed) → Used as a new line character in Unix/Mac OS X
\r\n = CR + LF → Used as a new line character in Windows
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What is the difference between return and return()?
...allowed because they are allowed in any expression to influence evaluation order, but in your examples they're just superfluous.
return is not a function, but a statement. It is syntactically similar to other simple control flow statements like break and continue that don't use parentheses either.
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Round a double to 2 decimal places [duplicate]
If the value is 200.3456 , it should be formatted to 200.34 .
If it is 200 , then it should be 200.00 .
13 Answers
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@property retain, assign, copy, nonatomic in Objective-C
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The article linked to by MrMage is no longer working. So, here is what I've learned in my (very) short time coding in Objective-C:
nonatomic vs. atomic
- "atomic" is the default. Always use "nonatomic". I don't know why, but the book I read said there is "rarely a reaso...
Comparing numbers in Bash
I'm starting to learn about writing scripts for the bash terminal, but I can't work out how to get the comparisons to work properly. The script I'm using is:
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How to find and turn on USB debugging mode on Nexus 4
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Solution
To see the option for USB debugging mode in Nexus 4 or Android 4.2 or higher OS, do the following:
Open up your device’s “Settings”. This can be done by pressing the
Menu button while on your home screen and tapping “System settings...
Why does NULL = NULL evaluate to false in SQL server
...ays evaluates to false. This is counterintuitive and has caused me many errors. I do understand the IS NULL and IS NOT NULL keywords are the correct way to do it. But why does SQL server behave this way?
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