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Add an already existing directory to a directory in Solution Explorer
...tory in Solution Explorer, but whenever I right-click on the directory and select Add => Existing Item , I can only add individual files, but not directories.
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What is the meaning of id?
...ion rules. For example, with a void * pointer you can't do this:
void *x;
char *y = x; // error, this needs an explicit cast
On the contrary, it's possible with id:
id x;
NSString *y = x;
See more usage of type id in objective c examples.
In addition in the "modern" Objective C it's preferred...
How to exclude particular class name in CSS selector?
...
One way is to use the multiple class selector (no space as that is the descendant selector):
.reMode_hover:not(.reMode_selected):hover
{
background-color: #f0ac00;
}
<a href="" title="Design" class="reMode_design reMode_hover">
<span&...
Getting output of system() calls in Ruby
...ble like so:
output = `ls`
p output
or
printf output # escapes newline chars
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How to tell bash that the line continues on the next line
... another programmer, some lines exceeded 80 columns in length. What is the character or thing to be added to the line in order to indicate that the line continues on the next line?
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Join between tables in two different databases?
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Yes, assuming the account has appropriate permissions you can use:
SELECT <...>
FROM A.table1 t1 JOIN B.table2 t2 ON t2.column2 = t1.column1;
You just need to prefix the table reference with the name of the database it resides in.
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CASCADE DELETE just once
...you want to cascade.
DELETE FROM some_child_table WHERE some_fk_field IN (SELECT some_id FROM some_Table);
DELETE FROM some_table;
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Detecting value change of input[type=text] in jQuery
...
$("#myTextBox").on("change paste keyup select", function() {
alert($(this).val());
});
select for browser suggestion
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Access-Control-Allow-Origin wildcard subdomains, ports and protocols
...use that's the correct way to do it (even though . is the only regexp meta char valid in a DNS name, preg_quote() describes the intended operation better)
– DaveRandom
Jul 20 '15 at 0:13
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Is there a way to select sibling nodes?
For some performance reasons, I am trying to find a way to select only sibling nodes of the selected node.
13 Answers
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