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How does Apple know you are using private API?
...s are stored in a special region of the binary, and therefore Apple could em>x m>tract the content from there, and check if you've used some undocumented Objective-C methods, such as -[UIDevice setOrientation:].
Since selectors are independent from the class you're messaging, even if your custom class d...
Efficiently test if a port is open on Linum>x m>?
...that Bash natively supports tcp connections as file descriptors. To use:
em>x m>ec 6<>/dev/tcp/ip.addr.of.server/445
echo -e "GET / HTTP/1.0\n" >&6
cat <&6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes used by Bash for child processe...
Strangest language feature
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Nem>x m>t
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Java: getMinutes and getHours
How do you get Hours and Minutes since Date.getHours and Date.getMinutes got deprecated? The em>x m>amples that I found on Google search used the deprecated methods.
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How to tell if a file is git tracked (by shell em>x m>it code)?
Is there a way to tell if a file is being tracked by running some git command and checking its em>x m>it code?
8 Answers
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Matplotlib plots: removing am>x m>is, legends and white spaces
...y apply colormap to an image and write the resulting image, without using am>x m>es, labels, titles or anything usually automatically added by matplotlib. Here is what I did:
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How to represent multiple conditions in a shell if statement?
... even without them.
Note that the -a and -o operators are part of the POSIm>X m> specification for test, aka [, mainly for backwards compatibility (since they were a part of test in 7th Edition UNIm>X m>, for em>x m>ample), but they are em>x m>plicitly marked as 'obsolescent' by POSIm>X m>. Bash (see conditional em>x m>pressio...
How to semantically add heading to a list
...nothing below the list is interpreted as belonging to the heading, that's em>x m>actly what the HTML5 sectioning content elements are for. So, for instance you could do
<h2>About Fruits</h2>
<section>
<h3>Fruits I Like:</h3>
<ul>
<li>Apples</li>
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How to use multiple AWS Accounts from the command line?
...s Key ID, AWS Secret Access Key and desired region, so have them ready.
Em>x m>amples:
$ aws configure --profile account1
$ aws configure --profile account2
You can then switch between the accounts by passing the profile on the command.
$ aws dynamodb list-tables --profile account1
$ aws s3 ls --pr...