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How many String objects will be created when using a plus sign?
...("C" + "D") + M());
so that is the concatenation of the constant string "CD" with M().
In fact, the concatenation optimizer realizes that string concatenation is associative, and generates String.Concat(M(), "AB") for the first example, even though that violates left associativity.
You can even ...
Can you supply arguments to the map(&:method) syntax in Ruby?
...And even work with inject, which passes two arguments to the block:
%w(abecd ab cd).inject(&:gsub.with('cde'))
# => "cdeeecde"
Or something super cool as passing [shorthand] blocks to the shorthand block:
[['0', '1'], ['2', '3']].map(&:map.with(&:to_i))
# => [[0, 1], [2, 3]]
[...
Calling JMX MBean method from a shell script
....google.com/p/jmxfuse/
For example, to read an attribute:
me@oddjob:jmx$ cd log4j/root/attributes
me@oddjob:jmx$ cat priority
to write an attribute:
me@oddjob:jmx$ echo "WARN" > priority
to invoke an operation:
me@oddjob:jmx$ cd Catalina/none/none/WebModule/localhost/helloworld/operations...
How do I clone a single branch in Git?
...s all branches. See @frerich=raabe's answer below.
– cdunn2001
Mar 17 '12 at 20:33
3
Thanks you. ...
How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
...t to install the whole ia32-lib instead, try the following order:
sudo -i
cd /etc/apt/sources.list.d
echo "deb http://old-releases.ubuntu.com/ubuntu/ raring main restricted universe multiverse" >ia32-libs-raring.list
apt-get update
apt-get install ia32-libs
PS: In this way, you can install i...
Remove folder and its contents from git/GitHub's history
...h runs much quicker:
# Make a fresh clone of YOUR_REPO
git clone YOUR_REPO
cd YOUR_REPO
# Create tracking branches of all branches
for remote in `git branch -r | grep -v /HEAD`; do git checkout --track $remote ; done
# Remove DIRECTORY_NAME from all commits, then remove the refs to the old commits...
How to solve Permission denied (publickey) error when using Git?
...rk.
On most systems you can use ssh-keygen.
First you'll want to cd into your .ssh directory. Open up the terminal and run:
cd ~/.ssh && ssh-keygen
Next you need to copy this to your clipboard.
On OS X run: cat id_rsa.pub | pbcopy
On Linux run: cat id_rsa....
Generating a unique machine id
...e stepping and model)
System Drive Serial Number (Not Volume Label)
Memory
CD-ROM model & vendor
Video Card model & vendor
IDE Controller
SCSI Controller
However, rather than just hashing the components and creating a pass/fail system, we create a comparable fingerprint that can be used to...
How to Sort Multi-dimensional Array by Value?
...,
],
[
'hashtag' => 'b24ce0cd392a5b0b8dedc66c25213594',
'title' => 'Free',
'order' => 2,
],
[
'hashtag' => 'e7d31fc0602fb2ede144d18cdffd816b',
'title'...
How to go to a specific file in Chrome Developer Tools?
... answered Jan 30 '13 at 15:52
CD..CD..
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