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How do I syntax check a Bash script without running it?
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I also enable the 'u' option on every bash script I write in order to do some extra checking:
set -u
This will report the usage of uninitialized variables, like in the following script 'check_init.sh'
#!/bin/sh
set -u
message=hello
echo $mesage
Running the script :
$ check_init...
How to resize a tableHeaderView of a UITableView?
...the actual header view. This is done using a UIView animation block.
In order to synchronize those two animations the animationCurve has to be set to UIViewAnimationCurveEaseInOut and the duration to 0.3, which seems to be what the UITableView uses for it's animation.
Update
I created an Xcode ...
How do I find the .NET version?
...sion 4.0. The v4.0.30319 is your Visual C# compiler version, therefore, in order to find the .NET framework version do the following.
Go to a command prompt and follow this path:
C:\Windows\Microsoft.NET\Framework\v4.0.30319 (or whatever the highest v number folder)
C:\Windows\Microsoft.NET\Frame...
Pacman: how do the eyes find their way back to the monster hole?
... than one is equally near the goal, pick the first valid direction in this order: up, left, down, right.
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Image Segmentation using Mean Shift explained
...ing the mean
Please note that the algorithm is not well defined at the borders, so different implementations will give you different results there.
I'll NOT discuss the gory mathematical details here, as they are impossible to show without proper mathematical notation, not available in StackOv...
When to use a View instead of a Table?
...view which called a view and so many millions of records were generated in order to see the three the user ultimately needed. I remember one of these views took 8 minutes to do a simple count(*) of the records. Views calling views are an extremely poor idea.
Views are often a bad idea to use to upd...
Sort a Custom Class List
...how Date implements ICompare, but often times I've seen developers use the order parameters were passed to break a tie when values are equal. hth
– ahsteele
May 18 '12 at 14:24
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rbenv not changing ruby version
...hich Ruby version to use by reading it from the following sources, in this order:
The RBENV_VERSION environment variable, if specified. You can use the rbenv shell command to set this environment variable in your current shell session.
The first .ruby-version file found by searching the director...
Convert JSON String to Pretty Print JSON output using Jackson
...SONObject(json)).toString(4); for some reason the second one is losing the order of keys
– Michail Michailidis
Jan 28 '19 at 20:55
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SQLite error 'attempt to write a readonly database' during insert?
... that if you are going to do a write operation (INSERT,UPDATE,DELETE,DROP, etc), then the folder the database resides in must have write permissions, as well as the actual database file.
I found this information in a comment at the very bottom of the PDO SQLite driver manual page.
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