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How to send a custom http status message in node / express?
...message
});
} else {
next(err);
}
});
Raise errors from any point in the code by doing:
var JSONError = require('./JSONError');
var err = new JSONError(404, 'Uh oh! Can't find something');
next(err);
Long Version
The canonical way of throwing errors is:
var err = new Err...
AngularJS $resource RESTful example
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$resource was meant to retrieve data from an endpoint, manipulate it and send it back. You've got some of that in there, but you're not really leveraging it for what it was made to do.
It's fine to have custom methods on your resource, but you don't want to mis...
Export a graph to .eps file with R
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This is a useful suggestion. cairo_ps differs from postscript in that it supports more unicode glyphs, but has the drawback that semi-transparency is poorly handled, and will often trigger bitmap rather than vector output.
– ms609
O...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
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From the python 2 manual:
CPython implementation detail: Objects of different types except numbers are ordered by their type names; objects of the same types that don’t support proper comparison are ordered by their add...
JSR-303 @Valid annotation not working for list of child objects
...: Hibernate Validator- Object Graph. (The list of passengers in Car)
Edit From Hibernate Validator 6 Reference doc:
In versions prior to 6, Hibernate Validator supported cascaded validation for a subset of container elements and it was implemented at the container level (e.g. you would use @Val...
Setting transparent images background in IrfanView
...orks for saved files but does not work when a picture is copy & pasted from the clipboard. For example, picture shown in a browser -> right click to copy image... -> open irfan -> paste. That results in black background. But I'm not sure whether it's irfan issue or the clipboard stores...
How to create loading dialogs in Android?
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It's a ProgressDialog, with setIndeterminate(true).
From http://developer.android.com/guide/topics/ui/dialogs.html#ProgressDialog
ProgressDialog dialog = ProgressDialog.show(MyActivity.this, "",
"Loading. Please wait...", true);
An indeterminate progres...
Method chaining - why is it a good practice, or not?
...ethod and/or implies a presumption of empty lists/sets and non-null values from every method in the chain (a fallacy causing many NPEs in systems I have to debug/fix often).
– Darrell Teague
Aug 11 '17 at 14:07
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What exactly does git rebase --skip do?
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@mittal: think of git rebase as copying commits from one branch onto another branch. So when you skip a commit, the original content of the commit is skipped and the patch is not applied (so all changes made to any file will not make it into your target branch). Easiest wa...
How do I check if a list is empty?
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The pythonic way to do it is from the PEP 8 style guide (where Yes means “recommended” and No means “not recommended”):
For sequences, (strings, lists, tuples), use the fact that empty sequences are false.
Yes: if not seq:
if seq:
N...