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In Python, using argparse, allow only positive integers
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type would be the recommended option to handle conditions/checks, as in Yuushi's answer.
In your specific case, you can also use the choices parameter if your upper limit is also known:
parser.add_argument('foo', type=int, choices=xrange(5, 10))
Note: Use range ...
How to use a variable to specify column name in ggplot
...t will remain around for a long time).
The idiomatic way now would be to convert to a symbol the string that the variable contains, using sym()(which is almost the same as base aliases as.name() / as.symbol()), and unquote it using !!
Simulating OP's data we can do :
library(tidyverse)
rates.by....
Can I set background image and opacity in the same property?
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Two methods:
Convert to PNG and make the original image 0.2 opacity
(Better method) have a <div> that is position: absolute; before #main and the same height as #main, then apply the background-image and opacity: 0.2; filter: alph...
How can I use “sizeof” in a preprocessor macro?
... ((void)sizeof(... it errors with expected identifier or '(' before 'void' and expected ')' before 'sizeof'. But in principle size_t x = (sizeof(... instead does work as intended. You have to "use" the result, somehow. To allow for this to be called multiple times either inside a function or at gl...
n-grams in python, four, five, six grams?
...o use the nltk.word_tokenize() function. Also to print the results had to convert the generator object like bigrams, trigrams and fourgrams to list using list(<genrator_object>).
– bhatman
Dec 18 '18 at 5:00
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calling non-static method in static method in Java [duplicate]
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@EJP For security purposes, and this is what I do with my project, in the case of dependency injection, it is useful to only have initialization code be instantiated for initialization, and not at the arbitrary discretion of code using my API. Thus, whe...
NULL vs nullptr (Why was it replaced?) [duplicate]
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@Cheersandhth.-Alf I have no idea how to respond to this other than the fact that I knew what I was asking and this was the easiest to understand explanation.
– Riptyde4
Dec 11 '13 at 3:17
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Android Webview - Completely Clear the Cache
I have a WebView in one of my Activities, and when it loads a webpage, the page gathers some background data from Facebook.
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In Visual Studio C++, what are the memory allocation representations?
In Visual Studio, we've all had "baadf00d", have seen seen "CC" and "CD" when inspecting variables in the debugger in C++ during run-time.
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Preferred Java way to ping an HTTP URL for availability
...ve to somehow close the connection?
No, you don't explicitly need. It's handled and pooled under the hoods.
I suppose this is a GET request. Is there a way to send HEAD instead?
You can cast the obtained URLConnection to HttpURLConnection and then use setRequestMethod() to set the request ...