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Checking if a string array contains a value, and if so, getting its position
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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...
rmagick gem install “Can't find Magick-config”
...opard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I can not figure out how to do this.
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Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
I am using hand crafted SQL to fetch data from a PG database, using SqlAlchemy. I am trying a query which contains the SQL like operator '%' and that seems to throw SqlAlcjhemy through a loop:
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jQuery map vs. each
...back arguments in the map function so be careful.
map(arr, function(elem, index) {});
// versus
each(arr, function(index, elem) {});
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How to find first element of array matching a boolean condition in JavaScript?
...eturn whether the condition was met once, not by which element (or at what index) it was met. So we have to amend it a little:
function find(arr, test, ctx) {
var result = null;
arr.some(function(el, i) {
return test.call(ctx, el, i, arr) ? ((result = el), true) : false;
});
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How to create an alias for a command in Vim?
...ith supplementary searching, I've found that someone asked nearly the same question as I.
:command <AliasName> <string of command to be aliased>
will do the trick.
Please be aware that, as Richo points out, the user command must begin with a capital letter.
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Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
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Lists are defined more by their indexers than by the ability to sort them (having an integer indexer makes it easy to sort something, but it's not a requirement).
– phoog
Apr 11 '12 at 20:22
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Can we write our own iterator in Java?
...Type> it = new Iterator<Type>() {
private int currentIndex = 0;
@Override
public boolean hasNext() {
return currentIndex < currentSize && arrayList[currentIndex] != null;
}
@Override
public...
Remove Primary Key in MySQL
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Without an index, maintaining an autoincrement column becomes too expensive, that's why MySQL requires an autoincrement column to be a leftmost part of an index.
You should remove the autoincrement property before dropping the key:
AL...
What is the difference between Set and List?
...ach element is inserted. The
user can access elements by their
integer index (position in the list),
and search for elements in the list.
Set<E>:
A collection that contains no
duplicate elements. More formally,
sets contain no pair of elements e1
and e2 such that e1.equals(e2...