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How to benchmark efficiency of PHP script
... a great tool for production and it's safe to run it there (as long as you read the instructions). The results of any one single page load aren't going to be as relevant as seeing how your code performs while the server is getting hammered to do a million other things as well and resources become sc...
How to convert image to byte array
... way to get Byte array from image path is
byte[] imgdata = System.IO.File.ReadAllBytes(HttpContext.Current.Server.MapPath(path));
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Rebasing a branch including all its children
...Should not that be --onto F instead of --onto B, as all these commits are aready onto B, and we move them onto F ?
– Ad N
Sep 27 '16 at 14:46
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Is it a bad practice to use an if-statement without curly braces? [closed]
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indeed, this answer actually took me from reading these answers cynically to being mildly concerned i may have actually made this mistake.
– omikes
Feb 7 '18 at 19:51
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What is the scope of variables in JavaScript?
...ck or function). However, variables declared using let and const cannot be read or assigned to until control has passed the point of declaration in the source code. The interim period is known as the temporal dead zone.
function f() {
function g() {
console.log(x)
}
let x = 1...
What is InnoDB and MyISAM in MySQL?
...ation to coarser granularity locks) and Oracle-style consistent nonlocking reads increase multi-user concurrency and performance. InnoDB stores user data in clustered indexes to reduce I/O for common queries based on primary keys. To maintain data integrity, InnoDB also supports FOREIGN KEY referent...
How to fetch all Git branches
... oneliner BEFORE git pull --all:
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
TL;DR version
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
git fetch --all
git pull ...
Java ResultSet how to check if there are any results
...all isBeforeFirst(). This avoids having to back-track if the data is to be read.
As explained in the documentation, this returns false if the cursor is not before the first record or if there are no rows in the ResultSet.
if (!resultSet.isBeforeFirst() ) {
System.out.println("No data");
}...
What happens to a declared, uninitialized variable in C? Does it have a value?
... // also zero
}
Non-static variables (local variables) are indeterminate. Reading them prior to assigning a value results in undefined behavior.
void foo() {
int x;
printf("%d", x); // the compiler is free to crash here
}
In practice, they tend to just have some nonsensical value in there ...
How to parse JSON in Python?
...rformance. More recent versions provide optimizations that greatly improve read and writing.
– unode
Oct 14 '11 at 19:11
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