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What is the size of column of int(11) in mysql in bytes?
...n INT(3) and store a value 5001, it will store 5001 but only display 1. I did not know that.
– andrewtweber
Jan 13 '12 at 21:37
17
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Is null check needed before calling instanceof?
...
Specifically, in Item 8, he notes that in equals() methods, one instanceof operator serves two purposes - it verifies that the argument is both non-null and of the correct type. "...[S]o you don't need a separate null check."
...
Overload with different return type in Java?
...e alone is not sufficient for the compiler to figure out which function to call:
public int foo() {...}
public float foo() {..}
...
foo(); // which one?
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Redirecting Output from within Batch file
...r good and fast way that only opens and positions the file once
@echo off
call :sub >output.txt
exit /b
:sub
command1
command2
...
commandN
Edit 2020-04-17
Every now and then you may want to repeatedly write to two or more files. You might also want different messages on the screen. It is st...
try/catch versus throws Exception
...ropagate. (I'm assuming that showException doesn't rethrow it.)
So if you call the first method and "do something" fails, then the caller will have to handle the exception. If you call the second method and "do something" fails, then the caller won't see an exception at all... which is generally a ...
Why does the expression 0 < 0 == 0 return False in Python?
...to say 0 < x <= 5 than to say (0 < x) and (x <= 5).
These are called chained comparisons. And that's a link to the documentation for them.
With the other cases you talk about, the parenthesis force one relational operator to be applied before the other, and so they are no longer chaine...
Any way to limit border length?
...
Hope this helps:
#mainDiv {
height: 100px;
width: 80px;
position: relative;
border-bottom: 2px solid #f51c40;
background: #3beadc;
}
#borderLeft {
border-left: 2px solid #f51c40;
position: absolute;
top: 50%;
bottom: 0;
}
<div id="mainDiv"...
Static class initializer in PHP
...te some code). Then, in my autoloader, when it loads a class it checks is_callable($class, '__init__'). If it is, it calls that method. Quick, simple and effective...
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Can't su to user jenkins after installing Jenkins
...epted that service accounts shouldn't be able to log in interactively.
I didn't answer this one initially as it's a duplicate of a question that has been moved to server fault. I should have answered rather than linked to the answer in a comment.
if for some reason you want to login as jenkins, yo...
How to make an AJAX call without jQuery?
How to make an AJAX call using JavaScript, without using jQuery?
23 Answers
23
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