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How can I use mySQL replace() to replace strings in multiple records?
...g with sample string:
UPDATE some_table SET some_field = REPLACE("this is test string", 'test', 'sample')
EG with Column/Field Name:
UPDATE some_table SET some_field = REPLACE(columnName, 'test', 'sample')
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Show pending migrations in rails
...ere is an example of the output after having just generated and not run a 'test' migration
rails_project theIV$ rake db:abort_if_pending_migrations
(in /Users/theIV/Sites/rails_project/)
You have 1 pending migrations:
20090828200602 Test
Run "rake db:migrate" to update your database then try agai...
What's the difference between the build and create methods in FactoryGirl?
...method only when persistence is really necessary since writing to DB makes testing time consuming.
e.g.
I create users to authentication with create() because my authentication engine queries the DB.
To check if a model has an attribute the build() method will do because no DB access is required...
Objective-C for Windows
... a specific framework. Their aim is to keep Cocotron up to date with the latest version of OS X so that any viable OS X program can run on Windows. Because GNUStep typically uses the latest version of gcc, they also add in support for Objective-C++ and a lot of the Objective-C 2.0 features.
I haven...
Convert XLS to CSV on command line
... is not limited to xls at all. xlsx Works just fine, as we could expect.
Tested with Office 2010.
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About “*.d.ts” in TypeScript
... the same folder, and point the code that needs it to the .d.ts file.
eg: test.js and test.d.ts are in the testdir/ folder, then you import it like this in a react component:
import * as Test from "./testdir/test";
The .d.ts file was exported as a namespace like this:
export as namespace Test;
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How to randomize (or permute) a dataframe rowwise and columnwise?
... also use the randomizeMatrix function in the R package picante
example:
test <- matrix(c(1,1,0,1,0,1,0,0,1,0,0,1,0,1,0,0),nrow=4,ncol=4)
> test
[,1] [,2] [,3] [,4]
[1,] 1 0 1 0
[2,] 1 1 0 1
[3,] 0 0 0 0
[4,] 1 0 1 0
randomizeMatrix(test,...
Completion handler for UINavigationController “pushViewController:animated”?
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I believe (haven't tested) that this could provide inaccurate results if the presented view controller triggers animations inside it's viewDidLoad or viewWillAppear implementations. I think those animations will be started before pushViewContr...
How can I get the button that caused the submit from the form submit event?
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I created a test form and using Firebug found this way to get the value;
$('form').submit(function(event){
alert(event.originalEvent.explicitOriginalTarget.value);
});
Unfortunately, only Firefox supports this event.
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Using forked package import in Go
... a tiny feature to a library I am using when I ran into this headache with testing it before creating a Pull Request.
– Joakim
Jul 18 '16 at 16:20
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