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Hashset vs Treeset
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This advice is based on the fact that for a set, you must check to see if an item is a duplicate before adding it; therefore you'll save time eliminating the duplicates if you are using an hashset over a treeset. However, considering the pr...
XmlSerializer giving FileNotFoundException at constructor
...} else { Fallback } instead of try { Load } catch { Fallback }. Exception-based flow control smells bad and makes my debugging experience more difficult and brittle than necessary.
– Timbo
Jul 28 '15 at 22:19
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What is the difference between pluck and collect in Rails?
...ects with all fields loaded and you simply get the id thanks to the method based on Enumerable.
So:
if you only need the id with Rails 4, use ids: User.first.gifts.ids
if you only need some fields with Rails 4, use pluck: User.first.gifts.pluck(:id, :name, ...)
if you only need one field with Rai...
How can I edit a view using phpMyAdmin 3.2.4?
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maybe you could create a new view based upon the result of the command above and add your edits to it?
– CheeseConQueso
Nov 11 '10 at 16:47
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iterating over each character of a String in ruby 1.8.6 (each_char)
...o ruby and currently trying to operate on each character separately from a base String in ruby. I am using ruby 1.8.6 and would like to do something like:
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What is the difference between Nexus and Maven?
...few statement that can put the difference in focus:
We migrated our code base from Ant to Maven
All 3rd party librairies have been uploaded to Nexus. Maven is using Nexus as a source for libraries.
Basic functionalities of a repository manager like Sonatype are:
Managing project dependencies,
Ar...
SQL update fields of one table from fields of another one
...I can think of.
This is specific to PostgreSQL. I am building dynamic code based on the the information_schema, in particular the table information_schema.columns, which is defined in the SQL standard and most major RDBMS (except Oracle) have it. But a DO statement with PL/pgSQL code executing dynam...
Rolling back a remote Git repository
...ng in a public or shared repository, you may diverge and break others work based on your original branch. Git will prevent you doing so, but you can use git push -f to force the update.
share
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imp...
How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
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// https://github.com/google/guava
import static com.google.common.base.Preconditions.*;
String getDayOfMonthSuffix(final int n) {
checkArgument(n >= 1 && n <= 31, "illegal day of month: " + n);
if (n >= 11 && n <= 13) {
return "th";
}
swi...
moving committed (but not pushed) changes to a new branch after pull
...Assuming that you're currently on master, you should be able to do:
git rebase origin/master
... which will replay all of your commits that aren't in origin/master onto origin/master. The default action of rebase is to ignore merge commits (e.g. those that your git pulls probably introduced) and...