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Why do you need ./ (dot-slash) before executable or script name to run it in bash?
... you type a command the shell looks up a list of directories, as specified by the PATH variable. The current directory is not in that list.
The reason for not having the current directory on that list is security.
Let's say you're root and go into another user's directory and type sl instead of ls...
Create tap-able “links” in the NSAttributedString of a UILabel?
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In general, if we want to have a clickable link in text displayed by UILabel, we would need to resolve two independent tasks:
Changing the appearance of a portion of the text to look like a link
Detecting and handling touches on the link (opening an URL is a particular case)
The first o...
PHP function to get the subdomain of a URL
...e('.', 'en.example.com')));
EDIT: Fixed "only variables should be passed by reference" by adding double parenthesis.
EDIT 2: Starting from PHP 5.4 you can simply do:
explode('.', 'en.example.com')[0];
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Use of the MANIFEST.MF file in Java
... are as name-value pairs. The name of a header is separated from its value by a colon. The default manifest shows that it conforms to version 1.0 of the manifest specification.
The manifest can also contain information about the other files that are packaged in the archive. Exactly what file informa...
Byte array to image conversion
I want to convert a byte array to an image.
13 Answers
13
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Minimum and maximum value of z-index?
...ndata.html#numbers
Some value types may have integer
values (denoted by <integer>) or
real number values (denoted by
<number>). Real numbers and
integers are specified in decimal
notation only. An <integer>
consists of one or more digits "0" to
"9". A <number&g...
What is two way binding?
... two-way binding automagically.
In Backbone, you can easily achieve #1 by binding a view's "render" method to its model's "change" event. To achieve #2, you need to also add a change listener to the input element, and call model.set in the handler.
Here's a Fiddle with two-way binding set up in...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
... at this moment, and you don't want that value to reflect any changes made by other owners of the object. You will need to release the object when you are finished with it because you are retaining the copy.
Assign
Assign is somewhat the opposite to copy. When calling the getter of an assign propert...
Pandas - Get first row value of a given column
...n column-based blocks (where each block has a single
dtype). If you select by column first, a view can be returned (which is
quicker than returning a copy) and the original dtype is preserved. In contrast,
if you select by row first, and if the DataFrame has columns of different
dtypes, then Pandas ...
how to release localhost from Error: listen EADDRINUSE
...node-process has not jet been terminated. But sometimes the port is in use by other processes, and therefore it might be difficult to understand/locate the correct process blokking it. WolfReporter below has a correct solution to this problem! stackoverflow.com/a/22875192/36975
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