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AI2 Keep Awake
...ly reduced by using this extension. Do not set WakeLocks if you do not really need them, use them as rarely as possible and release them as soon as possible. If actions are to be performed only occasionally, it is not necessary for the CPU to be constantly active. Instead, an alarm can be use...
Way to go from recursion to iteration
...ack, heap does not have memory restrictions. See gribblelab.org/CBootCamp/7_Memory_Stack_vs_Heap.html
– yuqli
Aug 28 '18 at 3:22
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show 9 mo...
How to navigate through the source code by parts in CamelCase (instead of whole words)?
...for double-clicking can be restored by locating and disabling the setting called "Honor "CamelHumps" words settings when selecting on double click".
– Paul Lammertsma
Jan 22 '15 at 13:14
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Why can't I use switch statement on a String?
...t compile time. At runtime, while the O(1) performance of tableswitch generally appears better than the O(log(n)) performance of lookupswitch, it requires some analysis to determine whether the table is dense enough to justify the space–time tradeoff. Bill Venners wrote a great article that covers...
How to set username and password for SmtpClient object in .NET?
...
Since not all of my clients use authenticated SMTP accounts, I resorted to using the SMTP account only if app key values are supplied in web.config file.
Here is the VB code:
sSMTPUser = ConfigurationManager.AppSettings("SMTPUser")
s...
How to get last key in an array?
... on what the OP wants to do with that array after (might not be needed to call reset()) ;; but you're right in pointing that function, which could be useful.
– Pascal MARTIN
Feb 27 '10 at 17:16
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When should I use File.separator and when File.pathSeparator?
...ystem
pathSeparatorChar: Same as pathSeparator but it’s char
Note that all of these are final variables and system dependent.
Here is the java program to print these separator variables.
FileSeparator.java
import java.io.File;
public class FileSeparator {
public static void main(String[]...
Select multiple columns in data.table by their numeric indices
...
For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt <- data.table(a = 1, b = 2, c = 3)
# select single column by index
dt[, 2]
# b
# 1: 2
# select multiple columns by index
dt[, 2:3]
# b c
# 1: 2 3
# select single column by na...
Why use 'git rm' to remove a file instead of 'rm'?
...ml
rm 'index.html'
$ git status -s
D index.html
However you can do this all in one go with just git rm
$ git status -s
$ git rm index.html
rm 'index.html'
$ ls
lib vendor
$ git status -s
D index.html
share
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Ruby Regexp group matching, assign variables on 1 line
...u can use String#match which will return a MatchData object, you can then call #captures to return an Array of captures. Something like this:
#!/usr/bin/env ruby
string = "RyanOnRails: This is a test"
one, two, three = string.match(/(^.*)(:)(.*)/i).captures
p one #=> "RyanOnRails"
p two #=...