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Determine path of the executing script
I have a script called foo.R that includes another script other.R , which is in the same directory:
27 Answers
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PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
... the new value.
So loop 1, the value and $arr[2] become $arr[0], which is 'foo'.
Loop 2, the value and $arr[2] become $arr[1], which is 'bar'.
Loop 3, the value and $arr[2] become $arr[2], which is 'bar' (because of loop 2).
The value 'baz' is actually lost at the first call of the second foreach lo...
How do I link to part of a page? (hash?)
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If there is an <a name="foo"> tag or any tag with an id (e.g., <div id="foo">), then you can simply append #foo to the URL. Otherwise, you can't arbitrarily link to portions of a page.
Here's a complete example: <a href="http://example...
How to use Namespaces in Swift?
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like this:
import FrameworkA
import FrameworkB
FrameworkA.foo()
All Swift declarations are considered to be part of
some module, so even when you say "NSLog" (yes, it still exists)
you're getting what Swift thinks of as "Foundation.NSLog".
Also Chris Lattner tweeted about namespacin...
How to grep a text file which contains some binary data?
... Yes, except that this won't work on OSX unless you do the following: LC_ALL="C" grep -a
– Chris Stratton
Feb 10 '19 at 18:05
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Open popup and refresh parent page on close popup
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I didn't know window.opener, thanks! I always put the caller window in a variable in the contentWindow of the child. :-/
– kay
May 29 '12 at 2:36
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How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
... such as !== or ===, then you can always be sure that the types won't magically change, because there will be no converting going on. So with strict comparison the type and value have to be the same, not only the value.
Type comparison table
As reference and example you can see the comparison tabl...
Is it not possible to stringify an Error using JSON.stringify?
...ying Error.prototype, while toJSON() may not be defined for Errors specifically, the method is still standardized for objects in general (ref: step 3). So, the risk of collisions or conflicts is minimal.
Though, to still avoid it completely, JSON.stringify()'s replacer parameter can be used instead...
Deleting an object in java?
...r leaving the block where it was declared. After that, it will be automatically deleted by the garbage collector (not immediately, but eventually).
Example 1:
Object a = new Object();
a = null; // after this, if there is no reference to the object,
// it will be deleted by the garbage co...
PHP 5.4 Call-time pass-by-reference - Easy fix available?
Is there any way to easily fix this issue or do I really need to rewrite all the legacy code?
3 Answers
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