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What is the proper way to check if a string is empty in Perl?
... comparisons in Perl, use eq or ne:
if ($str eq "")
{
// ...
}
The == and != operators are numeric comparison operators. They will attempt to convert both operands to integers before comparing them.
See the perlop man page for more information.
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How do I view an older version of an SVN file?
I have an SVN file which is now missing some logic and so I need to go back about 40 revisions to the time when it had the logic I need. Other than trying to view a diff of the file in the command line ( very hard to read ), is there any way I could get a copy of that file to review so I can study i...
Difference between HEAD and master
What is the difference between the HEAD and master in Git?
3 Answers
3
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Read user input inside a loop
...;0
BTW, if you really are using cat this way, replace it with a redirect and things become even easier:
while read line; do
read -u 3 input
echo "$input"
done 3<&0 <notify-finished
Or, you can swap stdin and unit 3 in that version -- read the file with unit 3, and just leave s...
What is phtml, and when should I use a .phtml extension rather than .php?
I'm wondering what the difference between .phtml and .php files is, and when to use one over the other.
6 Answers
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Splitting on first occurrence
... of occurrences in which method split() is being applied. Method will find and apply only first 'mango' string.
– Alex
Jul 1 '17 at 6:57
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How do you sort a list in Jinja2?
... By the way, does it work with both types of attributes...you know getattr and getitem ? (because I can't remember whether "movies" were objects or dictionaries)
– Nick Perkins
Mar 31 '11 at 23:28
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Disable XML validation in Eclipse
My Eclipse validates XML files every time I save a file and it takes a while to validate them.
The project is created using gwt-maven-plugin.
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Does Ruby have a string.startswith(“abc”) built in method?
...ot String#startswith: In Ruby, the names of boolean-ish methods end with ? and the words in method names are separated with an _. Not sure where the s went, personally, I'd prefer String#starts_with? over the actual String#start_with?
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Custom ListView click issue on items in Android
... list of databases internally. Do I just need to get the LinearLayout view and add an onClickListener like Tom did? I'm not sure.
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