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How do I list one filename per output line in Linux?
...s -1a
First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use man ls or ls --help or check the documentation. E.g.:
$ man ls
...
-1 list one file per line. Avoid '\n' with -q or -b
...
How to select where ID in Array Rails ActiveRecord without exception
...
If it is just avoiding the exception you are worried about, the "find_all_by.." family of functions works without throwing exceptions.
Comment.find_all_by_id([2, 3, 5])
will work even if some of the ids don't exist. This works in the
user.comments.find_all_by_id(potentially_nonexistent_id...
Setting the selected value on a Django forms.ChoiceField
...rying to assign the selected value to a ChoiceField.
If you have already called super().__init__ in your Form class, you should update the form.initial dictionary, not the field.initial property. If you study form.initial (e.g. print self.initial after the call to super().__init__), it will contai...
How do I make a semi transparent background?
...oft.gradient(startColorstr=#AARRGGBBAA,endColorstr=#AARRGGBBAA); its basically a gradient of a static color but with transparency.
– Tarun
Jan 27 '11 at 5:23
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Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
What is the difference between angle bracket < > and double quotes " " while including header files in C++?
2 Ans...
How do I find the width & height of a terminal window?
...nmental variables should be able to do the trick. The will be set automatically upon any change in the terminal size. (i.e. the SIGWINCH signal)
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Javascript communication between browser tabs/windows [duplicate]
...t;p>Type into the text box below and watch the text
appear automatically in the receiver.</p>
<form name="sender">
<input type="text" name="message" size="30" value="">
<input type="reset" value="Clean">
</form>
<script type="text/javascript"><!--
func...
How do 20 questions AI algorithms work?
...o get an answer after log2(N) questions.
With 20 question, we should optimally be able to find a word among 2^20 = 1 million words.
One easy way to eliminate outliers (wrong answers) would be to probably use something like RANSAC. This would mean, instead of taking into account all questions whic...
How can I tell if a library was compiled with -g?
...sing a C like syntax. If neither of these formats are found this option falls back on the -W option to print any DWARF information in the file."
– Matt McClellan
Jan 5 '10 at 17:13
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AWS S3: The bucket you are attempting to access must be addressed using the specified endpoint
...ting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint."
US Standard is us-east-1
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