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Test if string is a number in Ruby on Rails
...il 1154461.1 (±5.5%) i/s - 5788976 in 5.035311s
require 'benchmark/ips'
int = '220000'
bad_int = '22.to.2'
Benchmark.ips do |x|
x.report('cast') do
Integer(int) rescue false
end
x.report('cast fail') do
Integer(bad_int) rescue false
end
x.report('to_s') do
int.to_i....
Visual Studio popup: “the operation could not be completed”
...o output window == restart VS to fix).
– Thomas Andreè Wang
Jan 22 '16 at 13:45
I still prefer vs 2013 for some thing...
Can you pass parameters to an AngularJS controller on creation?
...nswered Feb 13 '14 at 10:23
François RomainFrançois Romain
9,1131212 gold badges7373 silver badges108108 bronze badges
...
What is scope/named_scope in rails?
...ed Feb 2 '11 at 2:17
Michael SchäfermeyerMichael Schäfermeyer
2,70411 gold badge1313 silver badges77 bronze badges
...
Why must a lambda expression be cast when supplied as a plain Delegate parameter
...keRequired code pattern are very helpful.
– Erik Philips
Jan 9 '13 at 1:12
...
Comparison of Lucene Analyzers
...hing like ["i", "be", "veri", "happi"] produced, and for French "Je suis très heureux" some kind of French analyzer (like SnowballAnalyzer, initialized with "French") will produce ["je", "être", "tre", "heur"]. Of course, if you will use analyzer of one language to stem text in another, rules from...
write a shell script to ssh to a remote machine and execute commands
...
There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ...
Connect Java to a MySQL database
... default 3306.
Download the JDBC driver and put in classpath, extract the ZIP file and put the containing JAR file in the classpath. The vendor-specific JDBC driver is a concrete implementation of the JDBC API (tutorial here).
If you're using an IDE like Eclipse or Netbeans, then you can add it to...
C++11 std::threads vs posix threads
...hat can be avoided for most applications.
– Erik Alapää
Aug 24 '16 at 8:00
Also, std::thread brings type safety that...
How to configure socket connect timeout
When the Client tries to connect to a disconnected IP address, there is a long timeout over 15 seconds... How can we reduce this timeout? What is the method to configure it?
...