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What is an API key? [closed]
...er to authentic request of posting or editing your site/database.
The API string is just the URL of the login for your site/database to contact the verification server.
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Java Try Catch Finally blocks without Catch
...e outer block.
public class TryCatchFinally {
public static void main(String[] args) throws Exception {
try{
System.out.println('A');
try{
System.out.println('B');
throw new Exception("threw exception in B");
}
finally
{
...
Validating parameters to a Bash script
...
Use '-z' to test for empty strings and '-d to check for directories.
if [[ -z "$@" ]]; then
echo >&2 "You must supply an argument!"
exit 1
elif [[ ! -d "$@" ]]; then
echo >&2 "$@ is not a valid directory!"
exit 1
fi
...
Global variables in AngularJS
...o be on a modern browser. Though know your values will all be turned into strings.
Also has the handy benefit of being cached between reloads.
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TextEnhancer拓展 - 增强App中的文本格式 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...Parameters: radius (float), dx (float), dy (float) - shadow offset, color (String) - shadow color.
blocks (31)[size=15.008px]810×318 25.5 KB
[size=15.008px]SetTextPadding:Set the padding around the text of the specified label. Parameters: left, top, right, bottom (int) - padding values in pix...
Simple way to create matrix of random numbers
...
You can drop the range(len()):
weights_h = [[random.random() for e in inputs[0]] for e in range(hiden_neurons)]
But really, you should probably use numpy.
In [9]: numpy.random.random((3, 3))
Out[9]:
array([[ 0.37052381, 0.03463207, 0.10669077],
[ 0.05...
How do I change the language of moment.js?
...rope/London");
function to format date
const ISOtoDate = function (dateString, format='') {
// if date is not string use conversion:
// value.toLocaleDateString() +' '+ value.toLocaleTimeString();
if ( !dateString ) {
return '';
}
if (format ) {
return moment(dateString).forma...
How to convert a ruby hash object to JSON?
... got it. But I did inspect with p date_json This is what I got for a true string "{\"year\":2013,\"mon\":7,\"mday\":16,\"hour\":13,\"min\":54,\"sec\":32,\"zone\":\"-05:00\",\"offset\":-18000}" so you may see that it is making the key symbols as strings and of course that data is unchanged. Thanks a...
How do I append text to a file?
...ther source.
Or else entered at the keyboard, doesn't matter.
^D
Essentially, you can dump any text you want into the file. CTRL-D sends an end-of-file signal, which terminates input and returns you to the shell.
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Ruby on Rails: How can I revert a migration with rake db:migrate?
...to revert.
eg. if you want to revert a migration with file name 3846656238_create_users.rb
rake db:migrate:down VERSION=3846656238
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