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What is the meaning of prepended double colon “::”?
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This ensures that resolution occurs from the global namespace, instead of starting at the namespace you're currently in. For instance, if you had two different classes called Configuration as such:
class Configuration; // class 1, in global namespace
namespace...
SOAP server and client application VCL+indy demo for Delphi XE?
...m 28789.
These contain every single one of the Delphi 2007 era SOAP demos from the WebServices folder, now updated for Delphi XE and XE2, including converting the old WAD servers into new INDY VCL servers. You'd think that was impressive, except it's not. It's really easy. Just use the wizard to c...
How do you organise multiple git repositories, so that all of them are backed up together?
...ultiple parties:
$ cd ~/dev
$ git clone /repos/foo.git # or the one from github, ...
$ cd foo
$ git remote add github ...
$ git remote add memorystick ...
You can then fetch/pull from each of the "sources", work and commit
locally, and then push ("backup") to each of these remotes when you
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Queue.Queue vs. collections.deque
...e which multiple threads can put stuff into, and multiple threads may read from.
7 Answers
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what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
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From what I can tell, there is no difference between hdfs dfs and hadoop fs. They're simply different naming conventions based on which version of Hadoop you're using. For example, the notes in 1.2.1 use hdfs dfs while 0.19 u...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...ice versa. This means that control needs to be transferred back and forth from ARC when bridging between CF types and Objective-C. Some keywords related to this bridging have been added, and Mike Ash has a great description of various bridging cases in his lengthy ARC writeup.
In addition to this,...
Is there an ignore command for git like there is for svn?
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git ignore
Add a pattern
git ignore "*.log"
Add one of the templates from gitignore.io
git ignore-io -a rails
git-extras provides many more useful commands. Definitely worth trying out.
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Read only file system on Android
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adb shell <command> can be used from the computer (if you lack a terminal on your phone)
– Fletcher91
May 19 '14 at 8:38
add a comme...
EC2 Can't resize volume after increasing size
...re increasing EBSs into larger sizes
Stop the instance
Create a snapshot from the volume
Create a new volume based on the snapshot increasing the size
Check and remember the current's volume mount point (i.e. /dev/sda1)
Detach current volume
Attach the recently created volume to the instance, sett...
When is .then(success, fail) considered an antipattern for promises?
...h(e) {
logger.log(e);
}
The catch logger will also handle exceptions from the success logger call.
So much for the difference.
I don't quite understand its explanation as for the try and catch
The argument is that usually you want to catch errors in every step of the processing, and tha...