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How to pipe input to a Bash while loop and preserve variables after loop ends
...hopt -s lastpipe # Comment this out to see the alternative behaviour
sum=0
echo "$FILECONTENT" |
while read number name; do ((sum+=$number)); done
echo $sum
Doing this at the command line usually runs foul of 'job control is not active' (that is, at the command line, job control is active). Test...
Is there a way to define a min and max value for EditText in Android?
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answered Jan 8 '13 at 10:18
Pratik SharmaPratik Sharma
12.6k55 gold badges2222 silver badges3535 bronze badges
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jQuery attr vs prop?
...dIndex, or defaultValue you had to do something like:
var elem = $("#foo")[0];
if ( elem ) {
index = elem.selectedIndex;
}
That sucked, so prop was added:
index = $("#foo").prop("selectedIndex");
This was great, but annoyingly this wasn't backward compatible, as:
<input type="checkbox" checke...
new DateTime() vs default(DateTime)
...
206
No, they are identical.
default(), for any value type (DateTime is a value type) will always c...
UIButton remove all target-actions
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answered Jul 27 '10 at 4:56
progrmrprogrmr
69.8k1515 gold badges106106 silver badges147147 bronze badges
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How to track child process using strace?
I used strace to attach to a process briefly. The process created 90 threads. When I found the offending thread, I had to tediously search for the parent thread, then the grandparent thread, and so on all the way to the root process.
...
Is there any way to ignore INSTALL_FAILED_VERSION_DOWNGRADE on application install with the Android
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290
It appears the latest version of adb tools has an "allow downgrade flag" that isn't shown in the...
how to File.listFiles in alphabetical order?
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answered Aug 26 '11 at 4:08
Ray ToalRay Toal
76.4k1212 gold badges143143 silver badges204204 bronze badges
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How can I make git do the “did you mean” suggestion?
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150
According to git-config(1), you want to set help.autocorrect appropriately. For example, git co...
How do you create nested dict in Python?
...ers
f.next()
# get first colum as keys
keys = (line.split(',')[0] for line in f)
# create empty dictionary:
d = {}
# read from file b.csv
with open(b_file) as f:
# gather headers except first key header
headers = f.next().split(',')[1:]
# iterate lines
for line in f:
...