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How do I prevent commands from showing up in Bash history?
Sometimes, when I run commands like rm -rf XYZ , I don't want this to be recorded in Bash history, because I might accidentally run the same command again by reverse-i-search . Is there a good way to prevent this from happening?
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String, StringBuffer, and StringBuilder
... So in Strings when we alter the value another object is created. Does the old object reference is nullified so that it may be garbage collected by the GC or is it even garbage collected?
– Harsh Vardhan
May 9 '14 at 7:07
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How to make a JSONP request from Javascript without JQuery?
Can I make a cross-domain JSONP request in JavaScript without using jQuery or other external library? I would like to use JavaScript itself and then parse the data and make it an object so I could use it. Do I have to use an external library? If not, how can I do it?
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Why functional languages? [closed]
...ges and stuff. Why would you use one over a "traditional" language? What do they do better? What are they worse at? What's the ideal functional programming application?
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Expand a div to fill the remaining width
...w value other than visible makes the block it's set on become a BFC. BFCs don't allow descendant floats to escape them, nor do they allow sibling/ancestor floats to intrude into them. The net effect here is that the floated div will do its thing, then the second div will be an ordinary block, taki...
INNER JOIN vs LEFT JOIN performance in SQL Server
...t's slower; by definition, an outer join (LEFT JOIN or RIGHT JOIN) has to do all the work of an INNER JOIN plus the extra work of null-extending the results. It would also be expected to return more rows, further increasing the total execution time simply due to the larger size of the result set.
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Service vs IntentService in the Android platform
I am seeking an example of something that can be done with an IntentService that cannot be done with a Service (and vice-versa)?
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How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
... set the execute bit on all the files?
I suspect what you really want to do is set the directories to 755 and either leave the files alone or set them to 644. For this, you can use the find command. For example:
To change all the directories to 755 (drwxr-xr-x):
find /opt/lampp/htdocs -type d -e...
How do I install a plugin for vim?
... but the advantage over cp versions is that it's completely safe (symlinks don't overwrite existing files, uninstall only deletes symlinks) and easy to keep things updated.
# Easily install vim plugins from a source control checkout (e.g. Github)
#
# alias vim-install=rake -f ~/.vim/rakefile-vim-in...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...ce.
Example of tight coupling:
class CustomerRepository
{
private readonly Database database;
public CustomerRepository(Database database)
{
this.database = database;
}
public void Add(string CustomerName)
{
database.AddRow("Customer", CustomerName);
}...