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Why is Magento so slow? [closed]
...g, layout config, etc.) that involve building up giant XML trees in memory and then "querying" those same trees for information. This takes both memory (storing the trees) and CPU (parsing the trees). Some of these (especially the layout tree) are huge. Also, unless caching is on, these tree are ...
Numeric for loop in Django templates
... a simple technique that works nicely for small cases with no special tags and no additional context. Sometimes this comes in handy
{% for i in '0123456789'|make_list %}
{{ forloop.counter }}
{% endfor %}
share
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Convert date to datetime in Python
...at it does is first retrieving the minimum value representable by datetime and then getting its time component. Incidentally, datetime.min = datetime(MINYEAR, 1, 1, tzinfo=None) and has a time of 00:00:00. However, I think it is cleaner to explicitly create a 00:00:00 time either through time.min or...
HtmlSpecialChars equivalent in Javascript?
Apparently, this is harder to find than I thought it would be. And it even is so simple...
16 Answers
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Rails has_and_belongs_to_many migration
I have two models restaurant and user that I want to perform a has_and_belongs_to_many relationship.
4 Answers
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Why malloc+memset is slower than calloc?
...se it can skip memset() entirely. In other cases, calloc() can even cheat and not allocate any memory! However, malloc()+memset() will always do the full amount of work.
Understanding this requires a short tour of the memory system.
Quick tour of memory
There are four main parts here: your prog...
What's the difference between io.sockets.emit and broadcast?
What's the difference between io.sockets.emit and socket.broadcast.emit? Is it only that broadcast emits to everyone BUT the socket that sends it?
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Where can I find the Java SDK in Linux after installing it?
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This depends a bit from your package system ... if the java command works, you can type readlink -f $(which java) to find the location of the java command. On the OpenSUSE system I'm on now it returns /usr/lib64/jvm/java-1.6.0-openjdk-1.6.0/jre/bin/java (but this is not a system which use...
Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean?
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Is there a perfect algorithm for chess? [closed]
...s huge. Even a 2 rooks + king has something like 22 possible next moves. And if it takes 6 moves to mate, you're looking at 12,855,002,631,049,216 moves.
Do the math on opening moves. While there's only about 20 opening moves, there are something like 30 or so second moves, so by the third move ...