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Best way to load module/class from lib folder in Rails 3?
...odules you want to be autoloadable.
# config.autoload_paths += %W(#{config.root}/extras)
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List columns with indexes in PostgreSQL
...SQL (pg_indexes):
SELECT * FROM pg_indexes WHERE tablename = 'mytable';
MySQL (SHOW INDEX):
SHOW INDEX FROM mytable;
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How do I write LINQ's .Skip(1000).Take(100) in pure SQL?
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No, but you could emulate MySQL's LIMIT clause (Stack Overflow link) to achieve the same result.
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Gradle buildscript dependencies
...ng repositories in the buildScript section of the gradle build or in the root level of the build.
3 Answers
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Why doesn't os.path.join() work in this case?
...d slashes at the beginning of path components, except when refering to the root directory:
os.path.join('/home/build/test/sandboxes', todaystr, 'new_sandbox')
see also: http://docs.python.org/library/os.path.html#os.path.join
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Network tools that simulate slow network connection [closed]
...e a public internet service on coffee shop wifi: sudo tc qdisc add dev lo root netem delay 500ms
– Sam Stokes
May 12 '10 at 21:21
7
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What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?
...otype.slice.call(arguments, 0);
var path = args[0].split('.');
var root = this;
for (var i = 0; i < path.length; i++) {
if(root[path[i]] === void 0) {
return args[1]?args[1]:null;
} else {
root = root[path[i]];
}
};
return root;
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What is an idempotent operation?
...does not mean idempotent. Idempotent functions can have side effects. E.g. MySQL's truncate and delete.
– Pacerier
Mar 10 '15 at 23:11
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How to list of all the tables defined for the database when using active record?
...tionAdapters::SchemaStatements#tables. This method is undocumented in the MySQL adapter, but is documented in the PostgreSQL adapter. SQLite/SQLite3 also has the method implemented, but undocumented.
>> ActiveRecord::Base.connection.tables
=> ["accounts", "assets", ...]
See activerecor...
What is the difference between a cer, pvk, and pfx file?
... of cryptographic information, including certificates, certificate chains, root authority certificates, and private keys. Its contents can be cryptographically protected (with passwords) to keep private keys private and preserve the integrity of root certificates.
Windows uses .pvk for a private ke...