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Add a column to a table, if it does not already exist
I want to write a query for MS SQL Server that adds a column into a table. But I don't want any error display, when I run/execute the following query.
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Add margin above top ListView item (and below last) in Android
...en when you scroll the list it disappears under the edge of the padding.
Set ListView's clipToPadding attribute to false. This will enable padding around the ListView and scrolling to the end of the layout (and not only to the edge of the padding).
An example:
<ListView
android:id="@+id/l...
How can I convert this foreach code to Parallel.ForEach?
... Well, the parallel for each means that separate threads are set up to execute the code in the loop body. Even though .NET does have efficient mechanism to do this, this is considerable overhead. So, if you just have to a simple operation (e.g. a sum or multiplication), the parallel fo...
Twig: in_array or similar possible within if statement?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Calling method using JavaScript prototype
...ause you lose any this binding in the original do method that way. So, the setup of the base method is a bit more complex, especially if you want to call it using the base object as this instead of the child object. I would suggest something akin to base_do.apply(me, arguments).
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Is there a way of making strings file-path safe in c#?
... instead of multiple times, like the solutions above that iterate over the set of invalid chars, replacing them in the source string one at a time. Also, I like the Where-based solutions, but I prefer to replace invalid chars instead of removing them. Finally, my replacement is exactly one character...
How do I REALLY reset the Visual Studio window layout?
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Have you tried this? In Visual Studio go to Tools > Import and Export Settings > Reset all settings
Be sure you back up your settings before you do this. I made the mistake of trying this to fix an issue and didn't realize it would undo all my appearance settings and toolbars as well. Took ...
Read and write a String from text file
...xt = "Hello World !!!"
// writing to disk
// Note: if you set atomically to true it will overwrite the file if it exists without a warning
try text.write(to: fileURL, atomically: false, encoding: .utf8)
print("saving was successful")
// any posterior code goe...
How can I get the MAC and the IP address of a connected client in PHP?
...y isn't bulletproof but its a start. Another more easier and secure way is setting a cookie with a unique hash. When using that cookie everytime you are sure which user is connecting to your website.
– Bearwulf
Jul 5 '12 at 11:50
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How does Trello access the user's clipboard?
...p on the clipboard, and select all the text in it, so the selection is all set when the C key is hit. (Then we hide the textarea when the Ctrl key comes up)
Specifically, Trello does this:
TrelloClipboard = new class
constructor: ->
@value = ""
$(document).keydown (e) =>
# ...