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What are the pros and cons of performing calculations in sql vs. in your application
...rver will save bandwidth, and disk io if the aggregates can be done inside indexes)
convenience (sql is not the best language for complex work - especially not great for procedural work, but very good for set-based work; lousy error-handling, though)
As always, if you do bring the data back to the...
How can I tell if a DOM element is visible in the current viewport?
....
TODO: this method does not handle two situations:
overlapping using z-index
using overflow-scroll in element's container
try something new - The Intersection Observer API explained
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imp...
How to get last items of a list in Python?
...
a negative index will count from the end of the list, so:
num_list[-9:]
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Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
...f (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri ...
Redis key naming conventions?
...user:808021:password = XYZ and second one is to put the key in registry or index ( set ), but what will happen when one command executed successfully and other gets failed means keys got created but not get entry in registry.
– LoveToCode
Jul 20 '16 at 5:55
...
Adding an identity to an existing column
... identity column is a primary key, is part of a clustered or non-clustered index, or other gotchas which can trip up the the simpler "add/remove/rename column" solution.
Here's the trick: you can use SQL Server's ALTER TABLE...SWITCH statement to change the schema of a table without changing the d...
Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...void copying arrays if possible, including when changing values for single indexes at a time.
If you want to be sure that an array variable (!) is unique, i.e. not shared with another variable, you can call the unshare method. This copies the array unless it already only has one reference. Of cours...
git diff between cloned and original remote repository
...t diff mybranch
diff --git a/playground/foo/bar.py b/playground/foo/bar.py
index b4fb1be..516323b 100655
--- a/playground/foo/bar.py
+++ b/playground/foo/bar.py
@@ -1,27 +1,29 @@
- This line is wrong
+ This line is fixed now - yea!
+ And I added this line too.
Commit locally.
$ git commit foo/bar...
Is it possible to set private property via reflection?
...Object obj, Object value, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
– CZahrobsky
Aug 24 '16 at 20:08
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What is java interface equivalent in Ruby?
...E> implements Collection<E>, Iterable<E> {
void add(int index, E element)
throws UnsupportedOperationException, ClassCastException,
NullPointerException, IllegalArgumentException,
IndexOutOfBoundsException;
}
What is the Interface of java.util.List...