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Detect if Android device has Internet connection
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Hello, is it OK to use this practice in current apps?
– Slava Fomin II
Mar 9 '15 at 12:49
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Convert column classes in data.table
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Try this
DT <- data.table(X1 = c("a", "b"), X2 = c(1,2), X3 = c("hello", "you"))
changeCols <- colnames(DT)[which(as.vector(DT[,lapply(.SD, class)]) == "character")]
DT[,(changeCols):= lapply(.SD, as.factor), .SDcols = changeCols]
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How to run function in AngularJS controller on document ready?
...t).ready(function () {
document.getElementById('msg').innerHTML = 'Hello';
});
}]);
http://jsfiddle.net/jgentes/stwyvq38/1/
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Is an anchor tag without the href attribute safe?
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Hello @Gunnar, the link seems to be gone now. Do you have another reference for the claim?
– user31782
Jan 9 '17 at 15:16
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How to trigger a phone call when clicking a link in a web page on mobile phone
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Hello, do not forget to put the plus sign and the country code like this: +1-555-555-5555 if you use Skype, this is a must for instant dialing.
– Samuel Ramzan
Jul 17 '16 at 20:31
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How can I play sound in Java?
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hello Anrew, your code worked for me, but i noticed that takes a little extra time in execution...about 1,5 sec.
– user5033850
Dec 11 '16 at 11:32
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Basic HTTP authentication with Node and Express 4
...ation required.') // Access denied.
// Access granted...
res.send('hello world')
// or call next() if you use it as middleware (as snippet #1)
}
PS: do you need to have both "secure" and "public" paths? Consider using express.router instead.
var securedRoutes = require('express').Rout...
How to set environment variables from within package.json
...rate .env file (make sure to ignore this from your source control).
VAR_A=Hello World
VAR_B=format the .env file like this with new vars separated by a line break
Then prepend export $(cat .env | xargs) && before your script command.
Example:
{
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"scripts": {
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"start": ...
Converting JSON data to Java object
...ew JSONObject();
json.put("id", 2);
json.put("firstName", "hello");
json.put("lastName", "world");
byte[] jsonData = json.toString().getBytes();
ObjectMapper mapper = new ObjectMapper();
Employee employee = mapper.readValue(jsonData, Employee.class);...
ALTER TABLE, set null in not null column, PostgreSQL 9.1
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Hello i added quotes just for understanding
– Rigin Oommen
Sep 28 '16 at 6:10
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