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What's better at freeing memory with PHP: unset() or $var = null
I realise the second one avoids the overhead of a function call ( update , is actually a language construct), but it would be interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off t...
PostgreSQL “DESCRIBE TABLE”
How do you perform the equivalent of Oracle's DESCRIBE TABLE in PostgreSQL (using the psql command)?
22 Answers
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T-SQL query to show table definition?
...puters that have only the most bare-bones apps and I have no rights to install studio. But SQLCMD is always an option.
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Return multiple columns from pandas apply()
I have a pandas DataFrame, df_test . It contains a column 'size' which represents size in bytes. I've calculated KB, MB, and GB using the following code:
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Changing CSS Values with Javascript
...ds like you want to change the global CSS so which will effictively change all elements of a peticular style at once. I've recently learned how to do this myself from a Shawn Olson tutorial. You can directly reference his code here.
Here is the summary:
You can retrieve the stylesheets via docum...
What does it mean to inflate a view from an xml file?
I am new to android development and keep coming across references to Inflating views from a layout xml file. I googled and searched the development guide but still wasn't able to pick up a sense for what it means. If someone could provide a very simple example, it'd be much appreciated.
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Split output of command by columns using Bash?
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Generic List - moving an item within the list
...ant.
public void Move(int oldIndex, int newIndex)
Underneath it is basically implemented like this.
T item = base[oldIndex];
base.RemoveItem(oldIndex);
base.InsertItem(newIndex, item);
So as you can see the swap method that others have suggested is essentially what the ObservableCollection doe...
What is the difference between Java RMI and RPC?
... a Java based technology and it's object oriented.
With RPC you can just call remote functions exported into a server, in RMI you can have references to remote objects and invoke their methods, and also pass and return more remote object references that can be distributed among many JVM instances, ...
How do I revert an SVN commit?
...en 1946 (good commit). Now i want to remove only 1944(bad commit) and keep all revision after 1944, means i want a result like 1943,1945,1946(remove only 1944) from all these revision, what should i do ??
– Bhavin_m
Nov 1 '18 at 12:49
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