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How to overcome TypeError: unhashable type: 'list'
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Internally, hash() method calls __hash__() method of an object which are set by default for any object.
Converting a nested list to a set
>>> a = [1,2,3,4,[5,6,7],8,9]
>>> set(a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unh...
Is there type Long in SQLite?
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You just define a column with Integer type. SQLite sets the column length to 1,2,4,8 depending on your input.
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Some font-size's rendered larger on Safari (iPhone)
...e there CSS or other reasons why Safari/iPhone would ignore some font-size settings? On my particular website Safari on the iPhone renders some font-size:13px text larger than font-size:15px text. Does it maybe not support font-size on some elements?
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String concatenation in MySQL
...ents, you can enable string concatenation with the || operator in MySQL by setting the PIPES_AS_CONCAT SQL mode.
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express 4.0 , express-session with odd warning message
I am trying to work through setting up a nodejs app using express 4.x. After stumbling through the middleware-removal issues, I finally got it working.
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Handling Touch Event in UILabel and hooking it up to an IBAction
...your view (which contains the UIlabel) implement:
-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event;
In interface builder set the UILabel's tag value. when touches occur in your touchesBegan method, check the tag value of the view to which the tag belongs:
UITouch *touch = [touches ...
Cleaning `Inf` values from an R dataframe
...s.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)
invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA)))
Or using column numbers (possibly faster if there ...
How do I remove the border around a focused contenteditable pre?
When I set a pre element to contenteditable and put focus in it for editing, it receives a dotted border around it that doesn't look very nice. The border isn't there when focus is somewhere else.
How do I remove that border?
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C# DropDownList with a Dictionary as DataSource
I want to set DataTextField and DataValueField of a Dropdownlist (languageList) using a Dictionary (list) of languageCod (en-gb) as key and language name (english) as the text to display.
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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...omment, you're right in a way that infinity is not a number, hence why the set [0, ∞) does not include it.
– wjandrea
Jul 28 '17 at 18:30
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