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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
...STINCT(*)", :conditions => ["date > #{self.date}"], :limit => 1, :order => 'date', :group => "date").show_generated_sql and have this call the construct_finder_sql method.
– rswolff
Aug 28 '09 at 17:02
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Sorting list based on values from another list?
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good solution! But it should be: The list is ordered regarding the first element of the pairs, and the comprehension extracts the 'second' element of the pairs.
– MasterControlProgram
Oct 6 '17 at 14:31
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How to set proxy for wget?
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For all users of the system via the /etc/wgetrc or for the user only with the ~/.wgetrc file:
use_proxy=yes
http_proxy=127.0.0.1:8080
https_proxy=127.0.0.1:8080
or via -e options placed after the URL:
wget ... -e use_proxy=yes -e http_proxy=127.0.0.1:8080 .....
How to make a phone call programmatically?
...198+","+1+","+1));
startActivity(callIntent);
for multiple ordered call
This is used to DTMF calling systems.
If call is drop then, you should pass more " , " between numbers.
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How to find out what group a given user has?
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or just study /etc/groups (ok this does probably not work if it uses pam with ldap)
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Constructor overloading in Java - best practice
...his as well as other examples that the constructor definitions are written order of which uses the least to the most arguments in the constructor call. Is this standard Java style? Why?: In my opinion it would make sense to do it the opposite way that way you the first constructor definition you sh...
What's the best way to validate an XML file against an XSD file?
...e example:
// File schemaFile = new File("/location/to/localfile.xsd"); // etc.
Source xmlFile = new StreamSource(new File("web.xml"));
SchemaFactory schemaFactory = SchemaFactory
.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
try {
Schema schema = schemaFactory.newSchema(schemaFile);
Val...
What is the reason not to use select *?
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If your code depends on the columns being in a specific order, your code will break when there are changes to the table. Also, you may be fetching too much from the table when you select *, especially if there is a binary field in the table.
Just because you are using all the col...
Where to place and how to read configuration resource files in servlet based application?
...classpath-relative path:
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
InputStream input = classLoader.getResourceAsStream("foo.properties");
// ...
Properties properties = new Properties();
properties.load(input);
Here foo.properties is supposed to be placed in one of t...
Joining two lists together
...string>();
a.AddRange(b);
MSDN page for AddRange
This preserves the order of the lists, but it doesn't remove any duplicates which Union would do.
This does change list a. If you wanted to preserve the original lists then you should use Concat (as pointed out in the other answers):
var newL...