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Is it possible to ping a server from Javascript?
... You need to ping the servers concurrently. You can achieve that with select, threads or processes. For really hardcore solution you could use Eventmachine.
– Epeli
Nov 26 '10 at 2:59
...
How to paginate with Mongoose in Node.js?
... perPage = 10
, page = Math.max(0, req.param('page'))
Event.find()
.select('name')
.limit(perPage)
.skip(perPage * page)
.sort({
name: 'asc'
})
.exec(function(err, events) {
Event.count().exec(function(err, count) {
res.render('events', {
...
UINavigationController “back button” custom text?
...
You can set the text in the Interface Builder:
Select the navigation item of the ViewController that the back button would return to:
In the utilities panel attribute inspector, enter your label for the Back Button:
I would prefer this approach over setting the titl...
Use of alloc init instead of new
...s here: http://macresearch.org/difference-between-alloc-init-and-new
Some selected ones are:
new doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you should use whatever you're comfortable with.
...
Package cairo was not found in the pkg-config search path. Node j.s install canvas issue
...y installing these ones:
brew install cairo
brew install pkg-config
xcode-select --install
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How To: Execute command line in C#, get STD OUT results
...pecifically, I want to execute DIFF on two files that are programmatically selected and write the results to a text box.
17...
PDOException “could not find driver”
...your server.
In Ubuntu/Debian you check for the package with:
dpkg --get-selections | grep php | grep mysql
Install the php5-mysql package if you do not have it.
In Ubuntu/Debian you can use:
PHP5: sudo apt-get install php5-mysql
PHP7: sudo apt-get install php7.0-mysql
Lastly, to get it wo...
How can I show line numbers in Eclipse?
...r and @voidstate mentioned you can now simply:
Right click the gutter and select "Show Line Numbers":
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Cannot obtain value of local or argument as it is not available at this instruction pointer, possibl
...fixed it for me in VS2017 Community! No idea when or how this option got deselected...
– Ian Kemp
Dec 25 '18 at 21:05
...
How to delete history of last 10 commands in shell?
...16 17:55:11 echo "Command 9"
1012 25-04-2016 17:55:14 echo "Command 10"
Select the start and end positions for the items you want to delete. I'm going to delete entries 1006 to 1008.
for h in $(seq 1006 1008); do history -d 1006; done
This will generate history -d commands for 1006, then 1007...