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How can I scan barcodes on iOS?
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We produced the 'Barcodes' application for the iPhone. It can decode QR Codes. The source code ...
How do I clone a subdirectory only of a Git repository?
...3dbbb8573abb6af1df96e63 d1/a
f70a17f51b7b30fec48a32e4f19ac15e261fd1a4 d1/b
84de03c312dc741d0f2a66df7b2f168d823e122a d2
0975df9b39e23c15f63db194df7f45c76528bccb d2/a
41484c13520fcbb6e7243a26fdb1fc9405c08520 d2/b
7d5230379e4652f1b1da7ed1e78e0b8253e03ba3 master
8b25206ff90e9432f6f1a8600f87a7bd695a24af ...
Best way to clear a PHP array's values
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If you just want to reset a variable to an empty array, you can simply reinitialize it:
$foo =...
How can I use a file in a command and redirect output to the same file without truncating it?
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You cannot do that because bash processes the redirections first, then executes the command. So...
PostgreSQL error: Fatal: role “username” does not exist
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This works for me:
psql -h localhost -U postgres
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Cannot ignore .idea/workspace.xml - keeps popping up
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I had this problem just now, I had to do git rm -f .idea/workspace.xml
now it seems to be gone ...
Why do we need private subnet in VPC?
... NAT gateway) = $47.98
t2.nano instance configured as a NAT instance = $4.84/month ($0.0065 * 744 hours in a month) + $10 ($.10/GB standard AWS data transfer charges for all data transferred via the NAT instance) = $14.84
This of course changes when you go for redundant NAT instances since the AWS...
More elegant “ps aux | grep -v grep”
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DarkDustDarkDust
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How to find index of all occurrences of element in array?
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Another alternative solution is to use Array.prototype.reduce():
["Nano","Volvo","BMW","Nano",...
How to fast-forward a branch to head?
... Greg HewgillGreg Hewgill
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