Re: How to detect whethere if a JSON node exists
On Monday, 13 April 2020 at 02:22:33 UTC, Adam D. Ruppe wrote:
On Monday, 13 April 2020 at 02:20:39 UTC, Adnan wrote:
Now in the above inner loop getStr(node["com"].str()) crashes
in runtime if an array does not contain "com" node. I want to
avoid that. How should I proceed?
Try:
if("com" in node) {
}
Came back here to say that I found exactly this solution. Thanks.
How to detect whethere if a JSON node exists
In the following code, I want to process an json array (returned
by the value of "posts") that might or might not have "com" key.
If a "com" key does not exist, I want to ignore that item in the
json array.
uint[string] wordTable;
const auto j = parseJSON(get(link));
foreach (node; j["posts"].array()) {
import std.stdio : writeln;
import std.utf : decode;
import std.algorithm: splitter;
foreach(word; getStr(node["com"].str()).splitter(' ')) { //
here!
if (word != "") wordTable.require(word, 0)++;
}
}
Now in the above inner loop getStr(node["com"].str()) crashes in
runtime if an array does not contain "com" node. I want to avoid
that. How should I proceed?
Re: How to detect whethere if a JSON node exists
On Monday, 13 April 2020 at 02:20:39 UTC, Adnan wrote:
Now in the above inner loop getStr(node["com"].str()) crashes
in runtime if an array does not contain "com" node. I want to
avoid that. How should I proceed?
Try:
if("com" in node) {
}
