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Technically, why are processes in Erlang more efficient than OS threads?
...y designed to be optimal in the case where there are fewer of them (of the order of the number of CPU cores) and where they are doing more significant amounts of processing each.
– Donal Fellows
May 12 '10 at 12:14
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Why does the default parameterless constructor go away when you create one with parameters
...static class, I most likely want to be able to instantiate that class. In order to allow that, the compiler must add a parameterless constructor, which will have no effect but to allow instantiation. This means that I don't have to include an empty constructor in my code just to make it work.
If I...
Scraping html tables into R data frames using the XML package
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Cosine Similarity between 2 Number Lists
... (more of a matrix transpose, actually) just to get the data in "Pythonic" order. It would be interesting to time the nuts-and-bolts implementation:
import math
def cosine_similarity(v1,v2):
"compute cosine similarity of v1 to v2: (v1 dot v2)/{||v1||*||v2||)"
sumxx, sumxy, sumyy = 0, 0, 0
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How to save a Python interactive session?
... Use "ipython -i [filename]" on the saved .py file, from the bash promt in order to load the file back before returning to an interactive console! (without the -i flag you don't get the interactive console after running the file).
– Samuel Lampa
Nov 29 '12 at 1...
missing private key in the distribution certificate on keychain
... Basically, we have a company developer account (not enterprise) and so in order to submit our app, I requested from our team lead to send me the distribution certificate and create and send me a distribution provisioning profile.
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How to run a single test with Mocha?
...n) invocations.
Consider using nested describe() calls for namespacing in order to make it easy to locate and select particular sets.
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Must Dependency Injection come at the expense of Encapsulation?
... should be fully valid after construction, such that anything they need in order to perform their role (i.e. be in a valid state) should be supplied through the constructor anyway. If you have an object that requires a collaborator to work, it seems fine to me that the constructor publically advert...
Why shouldn't I use mysql_* functions in PHP?
...eceded by a colon, instead of question marks. We don't care about position/order of value in name place holder:
$stmt->bindParam(':bla', $bla);
bindParam(parameter,variable,data_type,length,driver_options)
You can also bind using an execute array as well:
<?php
$stmt = $db->prepare("S...
Sort a text file by line length including spaces
... such lines being sorted against each other, and keep them in the relative order in which they occur in the input.
(Those who want more control of sorting these ties might look at sort's --key option.)
Why the question's attempted solution fails (awk line-rebuilding):
It is interesting to note th...