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Checking for the correct number of arguments
...output usage to stderr and exit with a failure status code.
More friendly error reporting:
#!/bin/sh
if [ "$#" -ne 1 ]; then
echo "Usage: $0 DIRECTORY" >&2
exit 1
fi
if ! [ -e "$1" ]; then
echo "$1 not found" >&2
exit 1
fi
if ! [ -d "$1" ]; then
echo "$1 not a directory" &g...
Check if object is a jQuery object
...o be declared in order for the typeof operator to work without throwing an error.
– Patrick Roberts
Aug 17 '15 at 19:05
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show 4 more commen...
How do I stop a Git commit when VI is on the screen waiting for a commit message?
...itor exit with a non-zero exit code. In Vim, you can use :cq (quit with an error code).
It's worth noting that you can always reset your working copy to the state it was in before the commit with git reset HEAD^.
share
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Delete specific line number(s) from a text file using sed?
...placed with one which deletes the lines right away. For example;
grep -nh error logfile | cut -d: -f1 | deletelines logfile
(where deletelines is the utility you are imagining you need) is the same as
grep -v error logfile
Having said that, if you are in a situation where you genuinely need to...
'git branch -av' showing remote branch that no longer exists
...eady deleted the branch on the remote computer's git repo, so you see this error message.
Here is a link that summarizes these commands.
The second problem deals with checkout.
When checking out a branch, you want to do so from a local branch, not the remote branch. That is why you get the error...
@synthesize vs @dynamic, what are the differences?
...
I was getting NSUnknownKeyException errors with my dynamic property when I removed the @synthesize line (Xcode 3.2 was giving me an error b/c I had no matching ivar for my @property). Adding @dynamic fixed the issue - compiles and runs fine now. Thanks!
...
NameError: global name 'unicode' is not defined - in Python 3
... a module in this package (algorithm.py) there are some lines that give me error, although it is part of the package.
4 Ans...
What does the LayoutInflater attachToRoot parameter mean?
... I'm confused. I was getting a "Specified child already has a parent error” until I read this answer, which directed my to use false for attachToRoot during my Fragment's onCreateView. This solved the problem and yet the fragment's layout is visible and active, despite your answer. What's ...
Application Loader stuck at “Authenticating with the iTunes store” when uploading an iOS app
...or me, but this one does. Apple needs to learn how to properly communicate error messages. Stuck on authenticating is not useful at all.
– Domen Grabec
May 5 '17 at 17:22
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How do I define and use an ENUM in Objective-C?
...tate thePlayerState; and used the variable in my methods. But I am getting errors stating that it is undeclared. How do I correctly declare and use a variable of type PlayerState in my methods?:
...