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How to reset a single table in rails?
...acks, and takes a little longer.
delete_all is a straight SQL query.
More info here: http://apidock.com/rails/ActiveRecord/Base/delete_all/class
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Solution to INSTALL_FAILED_INSUFFICIENT_STORAGE error on Android [closed]
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Thanks for the info. FYI you can consolidate flags in Unix so that ls command becomes ls -alR
– mharper
Feb 12 '13 at 18:47
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Receive result from DialogFragment
...r Activity, Fragment, or FragmentActivity you need to add in the following information:
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// Stuff to do, dependent on requestCode and resultCode
if(requestCode == 1) { // 1 is an arbitrary number, can be a...
How to tell if JRE or JDK is installed
...you look at it) when the above code is run. See unit tests below for more info...
Unit tests:
# Unix
java -XshowSettings:properties -version 2>&1|grep "sun.boot.library.path"
# Windows
java -XshowSettings:properties -version 2>&1|find "sun.boot.library.path"
# PASS: MacOS Ado...
How to get database structure in MySQL via query
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Take a look at the INFORMATION_SCHEMA.TABLES table. It contains metadata about all your tables.
Example:
SELECT * FROM `INFORMATION_SCHEMA`.`TABLES`
WHERE TABLE_NAME LIKE 'table1'
The advantage of this over other methods is that you can eas...
How to run only one task in ansible playbook?
... I normally use this for debug tasks. Normally, I don't want the debug info to run, but sometimes I do. Looking at the other responses, though, there might be a better way to do that now.
– ChePazzo
May 1 '19 at 16:54
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JavaScript and Threads
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See http://caniuse.com/#search=worker for the most up-to-date support info.
The following was the state of support circa 2009.
The words you want to google for are JavaScript Worker Threads
Apart from from Gears there's nothing available right now, but there's plenty of talk about how to i...
Detecting Unsaved Changes
....aspx page, you need a Javascript function to tell whether or not the form info is "dirty"
<script language="javascript">
var isDirty = false;
function setDirty() {
isDirty = true;
}
function checkSave() {
var sSave;
if (isDirty == true) {
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Storing custom objects in an NSMutableArray in NSUserDefaults
...n the NSUserDefaults collection. I also use this to save user registration info successfully, but for some reason trying to store my NSMutableArray of custom Location classes always comes back empty.
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Default value to a parameter while passing by reference in C++
...nd simple. Super practical if sometimes you want to return some additional info, statistics, etc. that you usually dont need.
– uLoop
Feb 12 '17 at 14:06
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