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Generate array of all letters and digits
Using ruby, is it possible to make an array of each letter in the alphabet and 0-9 easily?
7 Answers
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MySQL: Order by field size/length
...'CHAR_LENGTH' is not a recognized built-in function name. I am facing this error
– Anurag
Dec 25 '17 at 7:05
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Determine whether JSON is a JSONObject or JSONArray
... In the end though, I put the string into a JSONObject and if it threw an error, then I knew it was a JSONArray. try { return new JSONObject(json); } catch (Exception e) { } try { return new JSONArray(json); } catch (Exception e) { }
– Greg
Jun 23 '11 at...
How to list the properties of a JavaScript object?
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android.view.InflateException: Binary XML file: Error inflating class fragment
I have a very frustrating error that I cannot explain. I created an Android application that uses Android AppCompat to make it compatible with older versions. Here is my main activity layout file:
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Create or write/append in text file
...p.$insert."<br>", FILE_APPEND);
} else {
trigger_error("Timestamp not set", E_USER_ERROR);
}
}
public function getLog() {
$content = @file_get_contents($this->file);
return $content;
}
}
Then use it like this .. let's say you have ...
How do I check if file exists in Makefile so I can delete it?
...the file exists before deleting permanently. I use this code but I receive errors.
12 Answers
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What's is the difference between train, validation and test set, in neural networks?
...ing.
for each epoch
for each training data instance
propagate error through the network
adjust the weights
calculate the accuracy over training data
for each validation data instance
calculate the accuracy over the validation data
if the threshold validat...
Error while installing json gem 'mkmf.rb can't find header files for ruby'
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After installing ruby-devel (on Fedora 20), I got the error *** extconf.rb failed ***. Once installing gcc as you suggested, everything worked fine.
– Wayne Riesterer
Feb 10 '14 at 20:45
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Why is “origin/HEAD” shown when running “git branch -r”?
When you run git branch -r why the blazes does it list origin/HEAD ? For example, there's a remote repo on GitHub, say, with two branches: master and awesome-feature. If I do git clone to grab it and then go into my new directory and list the branches, I see this:
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