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Ruby Arrays: select(), collect(), and map()
The syntax for mapping:
3 Answers
3
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Range references instead values
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The short & direct answer: no, use the array index instead of the value
So the above code becomes:
package main
import "fmt"
type MyType struct {
field string
}
func main() {
var array [10]MyType
for idx, _ := range array {
array[idx].field = "...
find without recursion
Is it possible to use the find command in some way that it will not recurse into the sub-directories? For example,
3 Answ...
Repeatedly run a shell command until it fails?
...stop the loop when ./runtest returns a nonzero exit code (which is usually indicative of failure).
To further simplify your current solution though, you should just change your untilfail script to look like this:
#!/bin/bash
while "$@"; do :; done
And then you can call it with whatever command ...
How to use android emulator for testing bluetooth application?
I am developing an application which will send a request to a bluetooth printer for printing. The code is working fine for real devices, but I want to run it on the Android Emulator. How can I use the emulator for bluetooth testing?
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What is the template binding vs binding?
I could not understand BorderThickness="{TemplateBinding BorderThickness} .
Here the code:
4 Answers
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Connect to a heroku database with pgadmin
I would like to manage my heroku database with pgadmin client. By now, I've been doing this with psql .
When I use data from heroku pg:credentials to connect de DB using pgadmin , I obtain:
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How should I write tests for Forms in Django?
I'd like to simulate requests to my views in Django when I'm writing tests. This is mainly to test the forms. Here's a snippet of a simple test request:
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Ruby sleep or delay less than a second?
I'm making a script with ruby that must render frames at 24 frames per second, but I need to wait 1/24th of a second between sending the commands. What is the best way to sleep for less than a second?
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Get line number while using grep
I am using grep recursive to search files for a string, and all the matched files and the lines containing that string are print on the terminal. But is it possible to get the line numbers of those lines too??
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