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How to convert lazy sequence to non-lazy in Clojure
... to do is walk the lazy seq once (as doall does) in order to force it all, and thus render it non-lazy. seq does not force the entire collection to be evaluated.
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Getting unique items from a list [duplicate]
...able<T> of distinct items:
var uniqueItems = yourList.Distinct();
And if you need the sequence of unique items returned as a List<T>, you can add a call to ToList:
var uniqueItemsList = yourList.Distinct().ToList();
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How to select where ID in Array Rails ActiveRecord without exception
... this is my preferred solution, it seems cleaner than the exception handling route
– Sam Saffron
Sep 17 '09 at 23:25
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A worthy developer-friendly alternative to PayPal [closed]
I understand payments are a tricky thing, but I'm yet to find a worthy alternative to PayPal. I want to change from PayPal because I think they are expensive and it doesn't work in all countries. Furthermore, I think that the API is sufficient, but could be better. The API documentation, however, is...
Get lengths of a list in a jinja2 template
... products|length > 1 %}
jinja2's builtin filters are documented here; and specifically, as you've already found, length (and its synonym count) is documented to:
Return the number of items of a sequence or mapping.
So, again as you've found, {{products|count}} (or equivalently {{products|...
Which version of PostgreSQL am I running?
I'm in a corporate environment (running Debian Linux) and didn't install it myself. I access the databases using Navicat or phpPgAdmin (if that helps). I also don't have shell access to the server running the database.
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How do I escape ampersands in batch files?
How do I escape ampersands in a batch file (or from the
Windows command line) in order to use the start command to
open web pages with ampersands in the URL?
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Counting array elements in Python [duplicate]
...index of array? for example, when I'm looping that array, i get some index and how to know how much index is in?
– isnaini barochatun
May 9 at 13:06
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String concatenation in MySQL
I am using MySQL and MySQL Workbench 5.2 CE. When I try to concatenate 2 columns, last_name and first_name , it doesn't work :
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how to configure apache server to talk to HTTPS backend server?
I configured apache server as a reverse proxy and it works fine if I point a backend server as HTTP. That is:
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