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Django CharField vs TextField
...storage — and text (or similar) types — those are usually limited only by hardcoded implementation limits (not a DB schema).
PostgreSQL 9, specifically, states that "There is no performance difference among these three types", but AFAIK there are some differences in e.g. MySQL, so this is somet...
Find an item in List by LINQ?
...te that this will throw if the item doesn't exist. This solves the problem by resorting to nullable ints:
var tagged = list.Select((item, i) => new { Item = item, Index = (int?)i });
int? index = (from pair in tagged
where pair.Item == search
select pair.Index).FirstOrDef...
Add .gitignore to gitignore
... said, ignoring gitignore can be counter-productive if your repo is shared by multiple users.
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What algorithm does Readability use for extracting text from URLs?
...g to find a way of intelligently extracting the "relevant" text from a URL by eliminating the text related to ads and all the other clutter.After several months of researching, I gave it up as a problem that cannot be accurately determined. (I've tried different ways but none were reliable)
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“Large data” work flows using pandas
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I routinely use tens of gigabytes of data in just this fashion
e.g. I have tables on disk that I read via queries, create data and append back.
It's worth reading the docs and late in this thread for several suggestions for how to store your data.
Det...
how to find host name from IP with out login to the host
...npage:
Reverse lookups -- mapping addresses to names -- are simplified by the
-x option. addr is an IPv4 address in dotted-decimal notation, or a colon-delimited IPv6 address. When this option is used, there is no
need to provide the name, class and type arguments. dig automatically
perf...
Is recursion a feature in and of itself?
... yet, that was wrong.
Reading between the lines, one possibility is that by using recursion, you avoided ever using a feature that was supposed to be a learning outcome for his course. For example, maybe you didn't use iteration at all, or maybe you only used for loops instead of using both for an...
Clearing intent
My Android app is getting called by an intent that is passing information (pendingintent in statusbar).
20 Answers
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PreparedStatement IN clause alternatives?
...ow = ? into the faster IN (?) clause condition, which can then be expanded by calling the any method.
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Logging in Scala
...ach. The way slf4j knows which underlying logging library you are using is by loading a class by some name. I've had issues in which slf4j not recognizing my logger when classloader was customized.
Because the simple facade tries to be the common denominator, it's limited only to actual log calls. I...