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Cannot import XSSF in Apache POI
I am referencing the version 3.7 of the Apache POI and I am getting a "cannot be resolved" error when I do:
11 Answers
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How to analyze a java thread dump?
I am trying to understand more about java, especially about memory management and threads.
For this reason I have recently found interest in looking at thread dumps.
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Overriding id on create in ActiveRecord
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id is just attr_protected, which is why you can't use mass-assignment to set it. However, when setting it manually, it just works:
o = SomeObject.new
o.id = 8888
o.save!
o.reload.id # => 8888
I'm not sure what the original motivation was, but I do this when converting ActiveHash models to A...
How to use FormData for AJAX file upload?
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Can I set the "enctype" in the Ajax call? I think I may have an issue with it. Or, can I set it on the FormData object?
– Wouter
Jun 1 '14 at 7:50
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UITableView - change section header color
... if (section == integerRepresentingYourSectionOfInterest)
[headerView setBackgroundColor:[UIColor redColor]];
else
[headerView setBackgroundColor:[UIColor clearColor]];
return headerView;
}
Swift:
func tableView(_ tableView: UITableView!, viewForHeaderInSection section: Int) -> ...
Detecting WPF Validation Errors
In WPF you can setup validation based on errors thrown in your Data Layer during Data Binding using the ExceptionValidationRule or DataErrorValidationRule .
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Checkboxes in web pages – how to make them bigger?
...ering how you deal with the checkmark showing up. With the background just set to a color, the white checkmark in the box is no longer visible. Is there an easy solution? I've tried add a html entity for the check in a :before, but wondering if there is an alternative
– PBandJe...
Using Python String Formatting with Lists
I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list ...
How to sort Map values by key in Java?
...u and you cannot determine the type, then you can do the following:
SortedSet<String> keys = new TreeSet<>(map.keySet());
for (String key : keys) {
String value = map.get(key);
// do something
}
This will iterate across the map in natural order of the keys.
Longer answer
Te...
converting a .net Func to a .net Expression
Going from a lambda to an Expression is easy using a method call...
9 Answers
9
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