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Best practices with STDIN in Ruby?
...
I am not quite sure what you need, but I would use something like this:
#!/usr/bin/env ruby
until ARGV.empty? do
puts "From arguments: #{ARGV.shift}"
end
while a = gets
puts "From stdin: #{a}"
end
Note that because ARGV array is empty b...
Core dumped, but core file is not in the current directory?
... misleading message had me thinking I was going mad for a while, wondering what was eating my corefiles.
(Also, in general, the core(5) manual page -- man 5 core -- is a good reference for where your core file ends up and reasons it might not be written.)
...
Putting uncommitted changes at Master to a new branch by Git
...
#
# Changed but not updated:
# (use "git add <file>..." to update what will be committed)
#
# modified: linez.py
#
$
$ git stash
Saved working directory and index state \
"WIP on master: 934beef added the index file"
HEAD is now at 934beef added the index file
(To restore them type...
const char * const versus const char *?
...embarrassed I'm apparently the only one who doesn't understand this... but what's the difference between "the char to which it points" and "the char at which it points"?
– Lack
Jul 22 '13 at 17:40
...
Android DialogFragment vs Dialog
...an isolated DialogFragment for a simple Yes-No confirmation message box. What is the best practice in this case?
9 Answer...
Maven Install on Mac OS X
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Better than what, @Miranda ? I did not specify where to do the exports in the "installing by hand" option because I reckon people choosing the manual installation know best where they want to do these exports. This is quite specific to e...
Many-to-many relationship with the same model in rails?
... post A. To do that, you want to add a category field to the association.
What we need is no longer a has_and_belongs_to_many, but a combination of has_many, belongs_to, has_many ..., :through => ... and an extra model for the join table. This extra model is what gives us the power to add additi...
Remove leading or trailing spaces in an entire column of data
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If you would like to use a formula, the TRIM function will do exactly what you're looking for:
+----+------------+---------------------+
| | A | B |
+----+------------+---------------------+
| 1 | =TRIM(B1) | value to trim here |
+----+------------+------------...
How to check if a URL is valid
... I just fed Addressable::URI.parse() with the weirdest strings to see what it rejects. It accepted crazy stuff. However the first string it did not accept was ":-)". Hmm.
– mvw
Aug 18 '15 at 17:27
...
Get Image size WITHOUT loading image into memory
....read(32)
if len(head) != 32:
return
if imghdr.what(fname) == 'png':
check = struct.unpack('>i', head[4:8])[0]
if check != 0x0d0a1a0a:
return
width, height = struct.unpack('>ii', head[16:24])
elif imghdr.wh...