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What are the applications of binary trees?
...hing when you balance them. This involves rotating sub-trees through their root node so that the height difference between any two sub-trees is less than or equal to 1. Adding those names above one at a time into a balanced tree would give you the following sequence:
1. Alice
/ \
= ...
Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
...vironment variables definition:
$ ls -la /etc/environment
-r-xr-xr-x 1 root wheel 369 Oct 21 04:42 /etc/environment
$ cat /etc/environment
#!/bin/sh
set -e
syslog -s -l warn "Set environment variables with /etc/environment $(whoami) - start"
launchctl setenv JAVA_HOME /usr/local/jdk1.7...
Force point (“.”) as decimal separator in java
...ing.format which lets you specify the locale:
return String.format(Locale.ROOT, "%.2f", someDouble);
If you're only formatting a number - as you are here - then using NumberFormat would probably be more appropriate. But if you need the rest of the formatting capabilities of String.format, this sh...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...ked.
The small print:
In C++, types declared as class, struct, or union are considered "of class type". So the above refers to all three of them.
References are, semantically, aliases to objects, so I should have added "or reference to a pointer" to the #3 as well. However, I thought this...
What is the difference between gmake and make?
...gmake is soft link to make):
-> ls -l $(which gmake make)
lrwxrwxrwx 1 root root 4 Jun 5 2007 /usr/bin/gmake -> make
-rwxr-xr-x 1 root root 168976 Jul 13 2006 /usr/bin/make
gmake stands for GNU make. There're different implementations of make. On Linux machine most probably make wil...
How can “while (i == i) ;” be a non-infinite loop in a single threaded application?
...magic value within a calculation. Because a calculation failed - eg square root of a negative, divide by zero etc - it makes no sense in comparing them against anything else. After all if divide by zero is a nan is it equivalent to the square root of -2 or square root of -3 ?
Nan allows a calculati...
accepting HTTPS connections with self-signed certificates
...mportant parts from my blog article here:
Grab all required certificates (root and any intermediate CA’s)
Create a keystore with keytool and the BouncyCastle provider and import the certs
Load the keystore in your android app and use it for the secured connections (I recommend to use the Apache H...
How do I set up DNS for an apex domain (no www) pointing to a Heroku app?
...
(Note: root, base, apex domains are all the same thing. Using interchangeably for google-foo.)
Traditionally, to point your apex domain you'd use an A record pointing to your server's IP. This solution doesn't scale and isn't viabl...
Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
...
this hasn't worked for me. I have the root and the chain cert installed, but Tomcat-7 still reports validatorException caused by "unable to find valid certification path to requested target" any way to debug this?
– Cheruvim
...
'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
...E.O"
even in the upcoming office 2016
c:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSO.DLL
c:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\MSO.DLL
you will find the strings
Microsoft.ACE.OLEDB
Microsoft....