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eval command in Bash and its typical uses
...words) and then treats each word as a wildcard pattern. For example:
$ ls
file1 file2 otherfile
$ set -- 'f* *'
$ echo "$1"
f* *
$ echo $1
file1 file2 file1 file2 otherfile
$ n=1
$ eval echo \${$n}
file1 file2 file1 file2 otherfile
$eval echo \"\${$n}\"
f* *
$ echo "${!n}"
f* *
eval is not used v...
How should I organize Python source code? [closed]
... here from Google and are trying to find out how to split one large source file into multiple, more manageable, files I'll summarise the process briefly.
Assume you currently have everything in a file called main.py:
Create another source file in the same folder (let's call ours utils.py for this...
Label Alignment in iOS 6 - UITextAlignment deprecated
...l preprocessor defines. If you put something like this in your class’s h file (or perhaps in an imported constants file -- which must itself include #import <UIKit/UIKit.h> in order to ever know about the NSText... constants)…
#ifdef NSTextAlignmentCenter // iOS6 and later
# define kLab...
How to select a CRAN mirror in R
...ttp://cran.r-project.org"
options(repos=r)
})
which is in ~/.Rprofile.
Edit: As it is now 2018, we can add that for the last few years the URL "https://cloud.r-project.org" has been preferable as it reflects a) https access and b) an "always-near-you" CDN.
...
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
..._threads_wr = 1
# the number of worker threads (for write requests)
open_files_limit = 65535
# to allow handlersocket accept many concurrent
# connections, make open_files_limit as large as
# possible.
此外，InnoDB的innodb_buffer_pool_size，或MyISAM的key_buffy_size等关系到缓存索...
Why does jQuery or a DOM method such as getElementById not find the element?
...d because you have loaded the script without protocol and are running from file system:
<script src="//somecdn.somewhere.com/jquery.min.js"></script>
this syntax is used to allow the script to load via HTTPS on a page with protocol https:// and to load the HTTP version on a page with ...
“To Do” list before publishing Android app to market [closed]
...e to add this line: proguard.config=proguard.cfg in the default.properties file). This will optimize, shrink and obfuscate your code, very useful for preventing from code thieves. You don't have to delete any comments, they are automatically deleted at compile time.
Optimize your images (using Paint...
How to deploy correctly when using Composer's develop / production switch?
...ws:
A new project is started: composer.phar install --dev, json and lock files are commited to VCS.
Other developers start working on the project: checkout of VCS and composer.phar install --dev.
A developer adds dependancies: composer.phar require <package>, add --dev if you want the packag...
How to enter in a Docker container already running with a new TTY
...ner from another shell in order to "poke around" inside it and examine the files. At the moment, if I attach to the container, I am left looking at the Apache daemon and cannot run any commands.
...
How to save and load cookies using Python + Selenium WebDriver
How can I save all cookies in Python's Selenium WebDriver to a txt-file, then load them later? The documentation doesn't say much of anything about the getCookies function.
...