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How to determine if a record is just created or updated in after_save
The #new_record? function determines if a record has been saved. But it is always false in the after_save hook. Is there a way to determine whether the record is a newly created record or an old one from update?
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How to check if a string array contains one string in JavaScript? [duplicate]
...st this string against the array values and apply a condition the result - if the array contains the string do "A", else do "B".
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How can I know if a branch has been already merged into master?
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Just a side note, when I tried to see if a remote branch had been merged I first setup a local tracking branch, identified the status with git branch --merged and then deleted the local and remote branches.
– Kenneth Kalmer
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How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
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The
(condition) ? /* value to return if condition is true */
: /* value to return if condition is false */ ;
syntax is not a "shorthand if" operator (the ? is called the conditional operator) because you cannot execute code in the same manner as i...
Programmatically find the number of cores on a machine
...ine how many cores a machine has from C/C++ in a platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
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Laravel redirect back to original destination after login
...irect the user to "/login"
// and stores the url being accessed on session
if (Auth::guest()) {
return redirect()->guest('login');
}
return $next($request);
On login action:
// redirect the user back to the intended page
// or defaultpage if there isn't one
if (Auth::attempt(['email' =>...
How can I run a function from a script in command line?
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If the script only defines the functions and does nothing else, you can first execute the script within the context of the current shell using the source or . command and then simply call the function. See help source for mo...
VB.NET - How to move to next item a For Each Loop?
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For Each I As Item In Items
If I = x Then Continue For
' Do something
Next
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How can I check for Python version in a program that uses new language features?
If I have a Python script that requires at least a particular
version of Python, what is the correct way to fail gracefully
when an earlier version of Python is used to launch the script?
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NSIS学习笔记（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...en(szComponent);
// make a little change to input parameter
// below shift a unit character.
for (int i = 0; i < len; ++i)
szComponent[i] += 1;
// push back on the stack
pushstring(szComponent);
}
/*
nsMessageBoxPlugin::myFunction "abcdefg[来自NSIS的中文测试]"
Pop $0
...