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How to get the index of an item in a list in a single step?
...nt index = myList.FindIndex(a => a.Prop == oProp);
This method performs a linear search; therefore, this method is an
O(n) operation, where n is Count.
If the item is not found, it will return -1
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How to convert decimal to hexadecimal in JavaScript
...ited Apr 12 '19 at 12:24
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Sep 11 '08 at 22:28
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Add a column with a default value to an existing table in SQL Server
...TH VALUES
Example:
ALTER TABLE SomeTable
ADD SomeCol Bit NULL --Or NOT NULL.
CONSTRAINT D_SomeTable_SomeCol --When Omitted a Default-Constraint Name is autogenerated.
DEFAULT (0)--Optional Default-Constraint.
WITH VALUES --Add if Column is Nullable and you want the Default Value for ...
Error pushing to GitHub - insufficient permission for adding an object to repository database
I'm getting back an unusual error while trying to do a "git push" to my GitHub repository:
21 Answers
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try/catch + using, right syntax
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I prefer the second one. May as well trap errors relating to the creation of the object as well.
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Remove NA values from a vector
I have a huge vector which has a couple of NA values, and I'm trying to find the max value in that vector (the vector is all numbers), but I can't do this because of the NA values.
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How to compute the sum and average of elements in an array?
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var sum = 0;
for( var i = 0; i < elmt.length; i++ ){
sum += parseInt( elmt[i], 10 ); //don't forget to add the base
}
var avg = sum/elmt.length;
document.write( "The sum of all the elements is: " + sum + " The average is: " + avg ...
oh-my-zsh slow, but only for certain Git repo
I recently started using Zsh and it's awesome. Unfortunately, for the project I consider my "main" project, everything is slow. What I mean is that every time I run a command - ls , for example - there's about a five-second delay between the time the command is executed and the time I can use the t...
Iterate over a Javascript associative array in sorted order
...t iterate over them directly, but you can find all the keys and then just sort them.
var a = new Array();
a['b'] = 1;
a['z'] = 1;
a['a'] = 1;
function keys(obj)
{
var keys = [];
for(var key in obj)
{
if(obj.hasOwnProperty(key))
{
keys.push(key);
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Create a custom callback in JavaScript
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Actually, your code will pretty much work as is, just declare your callback as an argument and you can call it directly using the argument name.
The basics
function doSomething(callback) {
// ...
// Call the callback
callback('stuff', 'goes', 'here...