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How to check if a column exists in a SQL Server table?
I need to add a specific column if it does not exist. I have something like the following, but it always returns false:
31 ...
Python : List of dict, if exists increment a dict value, if not append a new dict
...
That is a very strange way to organize things. If you stored in a dictionary, this is easy:
# This example should work in any version of Python.
# urls_d will contain URL keys, with counts as values, like: {'http://www.google.fr/' : 1 }
urls_d = {}
for url in list_of_url...
What's the best way to iterate an Android Cursor?
...first result row, so on the first iteration this moves to the first result if it exists. If the cursor is empty, or the last row has already been processed, then the loop exits neatly.
Of course, don't forget to close the cursor once you're done with it, preferably in a finally clause.
Cursor cur...
How to find out if a Python object is a string?
How can I check if a Python object is a string (either regular or Unicode)?
15 Answers
...
I need this baby in a month - send me nine women!
Under what circumstances - if any - does adding programmers to a team actually speed development of an already late project?
...
How can I escape white space in a bash loop list?
...though this requires that your find support -print0:
# this is safe
while IFS= read -r -d '' n; do
printf '%q\n' "$n"
done < <(find test -mindepth 1 -type d -print0)
You can also populate an array from find, and pass that array later:
# this is safe
declare -a myarray
while IFS= read -r ...
MySQL IF NOT NULL, then display 1, else display 0
I'm working with a little display complication here. I'm sure there's an IF/ELSE capability I'm just overlooking.
7 Answer...
Detecting when user scrolls to bottom of div with jQuery
...nd:
jQuery(function($) {
$('#flux').on('scroll', function() {
if($(this).scrollTop() + $(this).innerHeight() >= $(this)[0].scrollHeight) {
alert('end reached');
}
})
});
http://jsfiddle.net/doktormolle/w7X9N/
Edit: I've updated 'bind' to 'on' as per:
As...
How can I check if a scrollbar is visible?
...(jQuery);
use it like this,
$('#my_div1').hasScrollBar(); // returns true if there's a `vertical` scrollbar, false otherwise..
tested working on Firefox, Chrome, IE6,7,8
but not working properly on body tag selector
demo
Edit
I found out that when you have horizontal scrollbar that causes vertica...
System.Net.WebException HTTP status code
...e something like this...
try
{
// ...
}
catch (WebException ex)
{
if (ex.Status == WebExceptionStatus.ProtocolError)
{
var response = ex.Response as HttpWebResponse;
if (response != null)
{
Console.WriteLine("HTTP Status Code: " + (int)response.Status...