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How to list all the available keyspaces in Cassandra?
...keyspace in the system schema using the SQL query
below is the command.
SELECT * FROM system_schema.keyspaces;
Hope this will answer your question...
You can go through the explanation on understanding and creating the keyspaces from below resources.
Documentation:
https://docs.datastax.co...
Debugging WebSocket in Google Chrome
...ad your page and initiate the WebSocket connections
Click the Network Tab.
Select the WebSocket connection from the list on the left (it will have status of "101 Switching Protocols".
Click the Messages sub-tab. Binary frames will show up with a length and time-stamp and indicate whether they are ma...
How to increase font size in NeatBeans IDE?
...
In OS X, Netbeans 8.0
Use Command + , to open the options
Select Fonts & Colors tab
Click the button in the Font section (button is next to the Font textbox)
Change the Font, style and size as needed
...
sql “LIKE” equivalent in django query
... = table.objects.filter(string__contains='pattern')
The SQL equivalent is
SELECT ... WHERE string LIKE '%pattern%';
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Android How to adjust layout in Full Screen Mode when softkeyboard is visible
...tPrevious) {
int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
int heightDifference = usableHeightSansKeyboard - usableHeightNow;
if (heightDifference > (usableHeightSansKeyboard/4)) {
// keyboard probably just became vis...
Copy existing project with a new name in Android Studio
...
I've selected the base package folder and clicked Refactor -> Rename, I got errors with "package rename" option, then I did "folder rename" option with success.
– Ismail Yavuz
May 23 '19 a...
npm command to uninstall or prune unused packages in Node.js
... b and d will both get their dependency met by the single c package at the root level of the tree.
The deduplication algorithm walks the tree, moving each dependency as far up in the tree as possible, even if duplicates are not found. This will result in both a flat and deduplicated tree.
...
Drag and drop files into WPF
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I used a Grid as root element, with a Border inside with the Background property set to something (white is fine, but not transparent). Inside the Border I put the actual content.
– mcont
Jan 27 '15 at 1...
Determine command line working directory when running node bin script
...s desirable to run an NPM script in the current directory, rather than the root of the project.
This variable is available inside npm package scripts as:
$INIT_CWD.
You must be running a recent version of NPM. If this variable is not available, make sure NPM is up to date.
This will allow you a...
Which $_SERVER variables are safe?
...iguration.
'GATEWAY_INTERFACE'
'SERVER_ADDR'
'SERVER_SOFTWARE'
'DOCUMENT_ROOT'
'SERVER_ADMIN'
'SERVER_SIGNATURE'
Partly server controlled
These variables depend on the specific request the client sent, but can only take a limited number of valid values, since all invalid values should be reject...