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XPath: How to select nodes which have no attributes?
...ess Marek Czaplicki's comment and expand the answer
//node[not(@*) or not(string-length(@*))]
....will select all node elements with zero attributes OR which have attributes that are all empty. If it was just a particular attribute you are interested in, rather than all of them, then you could us...
Are nested HTML comments possible?
...ut delving into the SGML that underlies it)) have come to believe that the string <!-- begins a comment, and the string --> ends a comment.
Actually, <! and > delimit an SGML declaration within your HTML document, such as the DOCTYPE declaration we've all seen at the top of our pages. W...
How do you clear a slice in Go?
....
See playground
package main
import (
"fmt"
)
func dump(letters []string) {
fmt.Println("letters = ", letters)
fmt.Println(cap(letters))
fmt.Println(len(letters))
for i := range letters {
fmt.Println(i, letters[i])
}
}
func main() {
letters := []string{"a", ...
Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...
Ruby hash-keys assigned by hash-rockets can facilitate strings for key-value pairs (e.g. 's' => x) whereas key assignment via symbols (e.g. key: "value" or :key => "value") cannot be assigned with strings. Although hash-rockets provide freedom and functionality for hash-ta...
Vim: What's the difference between let and set?
...ption} Toggle option: set, switch it on. Number option: show value. String option: show value. This doesn't agree with what you have here, when you say 'will set the default value for option wrap'. ??
– Elliptical view
Jul 13 at 22:24
...
Regular expression matching a multiline block of text
...eak
acids.append( line )
At this point you have someVaryingText as a string, and the acids as a list of strings.
You can do "".join( acids ) to make a single string.
I find this less frustrating (and more flexible) than multiline regexes.
...
PostgreSQL array_agg order
...DER BY y DESC) AS tab;
So in your case you would write:
SELECT
array_to_string(array_agg(animal_name),';') animal_names,
array_to_string(array_agg(animal_type),';') animal_types
FROM (SELECT animal_name, animal_type FROM animals) AS x;
The input to the array_agg would then be unordered but it w...
What is AssemblyInfo.cs used for?
...ssembly.GetAssembly(typeof(ProjectName.WebSite.Controllers.MyController));
string version = assembly.GetName().Version.ToString();
and it will be updated each time you upload a new version.
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Execute AsyncTask several times
...ute("your parameter");
static class FirmwareDownload extends AsyncTask<String, String, String> {
}
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Symfony 2: How do I check if a user is not logged in inside a template?
...ble can be a UserInterface object, any other object which implements a __toString() method or even a regular string.. I don't remember where I read that app.user returns "anon." string unfortunately and under what circumstances.
– pzaj
Apr 19 '17 at 14:37
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