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When to use MongoDB or other document oriented database systems? [closed]
... can retrieve data from only one collection and take advantage of only one index. And MongoDb is probably one of the most flexible NoSQL databases. In many scenarios, this means more round-trips to the server to find related records. And then you start de-normalizing data - which means background jo...
How to delete/create databases in Neo4j?
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there may be not only nodes and edges, but also indexes in the DB, and it's more difficult to get rid of those. also, i just managed to ruin a DB instance by massive repeated testing including deletions and it looks like physically deleting the DB files and having Neo4J re...
How can I get last characters of a string
...l) parameter is treated. In substr, it's the amount of characters from the index (the first parameter). In substring, it's the index of where the character slicing should end.
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Convert javascript array to string
... not dealing with jQuery objects):
var blkstr = $.map(value, function(val,index) {
var str = index + ":" + val;
return str;
}).join(", ");
DEMO
But why use jQuery at all in this case? map only introduces an unnecessary function call per element.
var values = []...
How to terminate a window in tmux?
...-U 1
bind . command-prompt
bind a last-window
bind space command-prompt -p index "select-window"
bind r source-file ~/.tmux.conf
# Options
set -g bell-action none
set -g set-titles on
set -g set-titles-string "tmux (#I:#W)"
set -g base-index 1
set -g status-left ""
set -g status-left-attr bold
set ...
Postgres DB Size Command
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Sometimes database contains indexes also. It has some storage value. I am looking for one command that will provide size of the complete database.
– Beautiful Mind
Sep 20 '13 at 4:12
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How ViewBag in ASP.NET MVC works
... More, you cannot do ViewBag["Foo"]. You will get exception - Cannot apply indexing with [] to an expression of type 'System.Dynamic.DynamicObject'.
Internal implementation of ViewBag actually stores Foo into ViewData["Foo"] (type of ViewDataDictionary), so those 2 are interchangeable. ViewData["Fo...
Changing all files' extensions in a folder with one command on Windows
...n
The replacement pattern is another filename with embedded wildcard
indexes, each
of which consists of the character # followed by a digit from 1 to 9. In the new name of a
matching file, the wildcard indexes are replaced by the actual characters that matched the
...
Removing viewcontrollers from navigation stack
... all view controller from navigation stack.
[navigationArray removeObjectAtIndex: 2]; // You can pass your index here
self.navigationController.viewControllers = navigationArray;
[navigationArray release];
Hope this will help you.
Edit: Swift Code
guard let navigationController = self.navigatio...
How to retrieve the first word of the output of a command in bash?
...der to allow word expansion
echo ${array[0]} # You can retrieve any word. Index runs from 0 to length-1
Also, you can directly read arrays in a pipe-line:
echo "word1 word2" | while read -a array; do echo "${array[0]}" ; done
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