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What is PostgreSQL explain telling me exactly?
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edited Jul 28 '12 at 8:24
PresleyDias
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Setting href attribute at runtime
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edited Dec 5 '15 at 19:36
Stout Joe
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answ...
Compile time string hashing
I have read in few different places that using C++11's new string literals it might be possible to compute a string's hash at compile time. However, no one seems to be ready to come out and say that it will be possible or how it would be done.
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python max function using 'key' and lambda expression
...on a particular attribute/index, you've to use the key argument.
Example 1:
A simple example, suppose you have a list of numbers in string form, but you want to compare those items by their integer value.
>>> lis = ['1', '100', '111', '2']
Here max compares the items using their origi...
What is the maximum characters for the NVARCHAR(MAX)?
...yte of storage.
Since NVARCHAR uses 2 bytes per character, that's approx. 1 billion characters.
Leo Tolstoj's War and Peace is a 1'440 page book, containing about 600'000 words - so that might be 6 million characters - well rounded up. So you could stick about 166 copies of the entire War and Peac...
How to convert a private key to an RSA private key?
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Newer versions of OpenSSL say BEGIN PRIVATE KEY because they contain the private key + an OID ...
How to import existing *.sql files in PostgreSQL 8.4?
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From the command line:
psql -f 1.sql
psql -f 2.sql
From the psql prompt:
\i 1.sql
\i 2.sql...
Recommended way to stop a Gradle build
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120
I usually throw the relevant exception from the org.gradle.api package, for example InvalidUse...
How to get unique device hardware id in Android? [duplicate]
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Update: 19 -11-2019
The below answer is no more relevant to present day.
So for any one look...