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How to access a preexisting collection with Mongoose?
.../localhost/local');
var connection = mongoose.connection;
connection.on('error', console.error.bind(console, 'connection error:'));
connection.once('open', function () {
connection.db.collection("YourCollectionName", function(err, collection){
collection.find({}).toArray(function(err,...
Convert string to integer type in Go?
...to int
i, err := strconv.Atoi(s)
if err != nil {
// handle error
fmt.Println(err)
os.Exit(2)
}
fmt.Println(s, i)
}
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java.net.UnknownHostException: Invalid hostname for server: local
What are the steps I should take to solve the error:
13 Answers
13
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In Go's http package, how do I get the query string on a POST request?
...o, sample codes as below would work.
func parseRequest(req *http.Request) error {
var err error
if err = req.ParseForm(); err != nil {
log.Error("Error parsing form: %s", err)
return err
}
_ = req.Form.Get("xxx")
return nil
}
...
How to uninstall a Windows Service when there is no executable for it left on the system?
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If you get error 1072, make sure you don't have the services control panel open (see this other question)
– Giles
Feb 8 '17 at 11:17
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How do I use regex in a SQLite query?
...ed by default and so use of the REGEXP operator will normally result in an error message. If a application-defined SQL function named "regexp" is added at run-time, that function will be called in order to implement the REGEXP operator. (sqlite.org/lang_expr.html#regexp)
– radi...
What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...
Not just error code. It's the returned status code of any command.
– mehulkar
Jul 8 '14 at 17:44
10
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How can I deploy an iPhone application from Xcode to a real iPhone device?
...ject settings from iphoneos to iOS 4.3, things work. Although xcode says 'Error launching remote program: failed to get the task for process' I can launch the app by clicking on it.
– nosatalian
Aug 10 '11 at 5:34
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Fastest way to replace NAs in a large data.table
...m elapsed
18.805 12.301 134.985
system.time(a_andrie = f_andrie(dt1))
Error: cannot allocate vector of size 305.2 Mb
Timing stopped at: 14.541 7.764 68.285
system.time(f_dowle(dt1))
user system elapsed
7.452 4.144 19.590 # EDIT has faster than this
identical(a_gdata, dt1)
[1] ...
No tests found with test runner 'JUnit 4'
...h other methods that do not start with test but still i get No tests found error
– Rachel
Jun 5 '12 at 19:31
1
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