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Multiple submit buttons in an HTML form
...Press event of the form element and would detect whether the Enter key was selected. If this is the case, it will submit the form.
Here are two pages that give techniques on how to do this: 1, 2. Based on these, here is an example of usage (based on here):
<SCRIPT TYPE="text/javascript">//&l...
How to restart a rails server on Heroku?
...ple web processes or worker processes, each labeled with a number, you can selectively restart one of them:
heroku ps:restart web.2 --app app_name
heroku ps:restart worker.3 --app app_name
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Get TransactionScope to work with async / await
...y project from 4.5 to 4.5.1 by right clicking on project go to properties. Select application tab change target framework to 4.5.1 and use transaction as follow.
using (AccountServiceClient client = new AccountServiceClient())
using (TransactionScope scope = new TransactionScope(TransactionScopeAsy...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
...
The best practice is selecting the most appropriate one.
.Net Framework 4.0 Beta 2 has a new IsNullOrWhiteSpace() method for
strings which generalizes the IsNullOrEmpty() method to also include other white
space besides empty string.
...
How does “cat
...1. Assign multi-line string to a shell variable
$ sql=$(cat <<EOF
SELECT foo, bar FROM db
WHERE foo='baz'
EOF
)
The $sql variable now holds the new-line characters too. You can verify with echo -e "$sql".
2. Pass multi-line string to a file in Bash
$ cat <<EOF > print.sh
#!/bin...
Algorithm to randomly generate an aesthetically-pleasing color palette [closed]
...h new color is chosen to maximize its euclidian distance to the previously selected ones.
Here you can find a a good implementation in javascript:
http://afriggeri.github.com/RYB/
UPDATE 2:
The Sciences Po Medialb have just released a tool called "I want Hue" that generate color palettes for da...
Best way to show a loading/progress indicator?
...e.
By the way, Spinner has a different meaning in Android. (It's like the select dropdown in HTML)
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How can I parse a YAML file from a Linux shell script?
...ailable for solid multiline entry manipulation.
simple dotted notation to select sub-values (ie: subvalue.maintainer is a valid key).
access by index is provided to sequences (ie: subvalue.things.-1 is the last element of the subvalue.things sequence.)
access to all sequence/structs elements in on...
How can I get the external SD card path for Android 4.0+?
...e directory mnt first and work from there..
You should use some type of selection method to choose which sdcard to use:
File storageDir = new File("/mnt/");
if(storageDir.isDirectory()){
String[] dirList = storageDir.list();
//TODO some type of selecton method?
}
...
SQL: How to get the count of each distinct value in a column?
...
SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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