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When should I use Struct vs. OpenStruct?
...
Benchmark.bm 20 do |x|
x.report 'OpenStruct slow' do
REP.times do |index|
OpenStruct.new(:name => "User", :age => 21)
end
end
x.report 'OpenStruct fast' do
REP.times do |index|
OpenStruct.new(HASH)
end
end
x.report 'Struct slow' do
REP.times do |...
How Scalable is SQLite? [closed]
...
edit: I just realized that I may not have been fair to SQLite - I didn't index any columns in the SQLite database when I was serving it from a web page. This partially caused the slowdown I was experiencing. However, the observation of database-locking stands - if you have particularly onerous upd...
How do I execute a bash script in Terminal?
...er misunderstanding. Unless the script internally has dependencies which require it to run in a particular directory (like, needing to read a data file which the script inexplicably doesn't provide an option to point to) you should never need to cd anywhere to run it, and very often will not want to...
Should one use < or
...ember when I first started learning Java. I hated the concept of a 0-based index because I've always used 1-based indexes. So I would always use the <= 6 variant (as shown in the question). To my own detriment, because it would confuse me more eventually on when the for loop actually exited. It's...
Delete element in a slice
...
Where a is the slice, and i is the index of the element you want to delete:
a = append(a[:i], a[i+1:]...)
... is syntax for variadic arguments in Go.
Basically, when defining a function it puts all the arguments that you pass into one slice of that type. B...
How to jump to a particular line in a huge text file?
...
+1: Also, if the file doesn't change, the line number index can be pickled and reused, further amortizing the initial cost of scanning the file.
– S.Lott
Mar 6 '09 at 21:48
...
Setting dynamic scope variables in AngularJs - scope.
...read given answers, the following worked for me:
HTML:
<div id="div{{$index+1}}" data-ng-show="val{{$index}}">
Where $index is the loop index.
Javascript (where value is the passed parameter to the function and it will be the value of $index, current loop index):
var variable = "val"+val...
What is “export default” in javascript?
...strate this line with a simple example.
Lets say we have 3 modules and an index.html:
modul.js
modul2.js
modul3.js
index.html
modul.js
export function hello() {
console.log("Modul: Saying hello!");
}
export let variable = 123;
modul2.js
export function hello2() {
console.log("Modul...
What is the best way to iterate over a dictionary?
.... For that, LINQ provides ElementAt which enables the following:
for (int index = 0; index < dictionary.Count; index++) {
var item = dictionary.ElementAt(index);
var itemKey = item.Key;
var itemValue = item.Value;
}
...
Checking if a string array contains a value, and if so, getting its position
...
You could use the Array.IndexOf method:
string[] stringArray = { "text1", "text2", "text3", "text4" };
string value = "text3";
int pos = Array.IndexOf(stringArray, value);
if (pos > -1)
{
// the array contains the string and the pos variable...