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Difference between String#equals and String#contentEquals methods
...d it, I am sharing the implementations of both the methods (as of jdk 1.7.0_45)
public boolean contentEquals(CharSequence cs) {
if (value.length != cs.length())
return false;
// Argument is a StringBuffer, StringBuilder
if (cs instanceof AbstractStringBuilder) {
char v1[...
Eclipse Android and gitignore
...
There are file types to ignore
# built application files
*.apk
*.ap_
# files for the dex VM
*.dex
# Java class files
*.class
# generated files
bin/
gen/
# Local configuration file (sdk path, etc)
local.properties
# Eclipse project files
.classpath
.project
# Proguard folder generated b...
data.table vs dplyr: can one do something well the other can't or does poorly?
..., keyby = .(x,y)][DT2][, z := z*mul][]
# dplyr equivalent
DF1 %>% group_by(x, y) %>% summarise(z = sum(z)) %>%
right_join(DF2) %>% mutate(z = z * mul)
2) do it all in one go (using by = .EACHI feature):
DT1[DT2, list(z=sum(z) * mul), by = .EACHI]
What is the advantage?
We do...
Upgrade python in a virtualenv
... folders for both python versions (2.7.x and 2.7.y packages are inside your_env/lib/python2.7/).
If you change your virtualenv python version, you will need to install all your packages again for that version (or just link the packages you need into the new version packages folder, i.e: your_env/li...
MAC addresses in JavaScript
....ConnectServer(".");
var properties = s.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration");
var e = new Enumerator(properties);
var output;
output = '<table border="0" cellPadding="5px" cellSpacing="1px" bgColor="#CCCCCC">';
output = output + '<tr bgColor=...
Editing legend (text) labels in ggplot
... text in the legend, even though it's in my dataframe. I have tried scale_colour_manual , scale_fill_manual with different values for labels= such as c("T999", "T888")", "cols" .
...
Running multiple TeamCity Agents on the same computer?
...ee agents much faster than it will with one.
– bopapa_1979
Jun 12 '13 at 19:29
13
If you've gone ...
How to grep (search) committed code in the Git history
... Excellent. +1. The GitBook add some details (book.git-scm.com/4_finding_with_git_grep.html), and Junio C Hamano illustrates some of your points: gitster.livejournal.com/27674.html
– VonC
May 28 '10 at 21:26
...
Add table row in jQuery
...ows, there will be no tbody unless you have specified one yourself.
DaRKoN_ suggests appending to the tbody rather than adding content after the last tr. This gets around the issue of having no rows, but still isn't bulletproof as you could theoretically have multiple tbody elements and the row wou...
Socket.IO Authentication
... redisclient.get(message.rediskey, function(e, c) {
client.user_logged_in = c.username;
});
}
});
});
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