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How to check if running as root in a bash script
I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
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How to lock compiled Java classes to prevent decompilation?
How do I lock compiled Java classes to prevent decompilation?
9 Answers
9
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#ifdef vs #if - which is better/safer as a method for enabling/disabling compilation of particular s
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My initial reaction was #ifdef, of course, but I think #if actually has some significant advantages for this - here's why:
First, you can use DEBUG_ENABLED in preprocessor and compiled tests. Example - Often, I want longer timeouts when debug is enabled, so using #if, I can wr...
Why is document.write considered a “bad practice”?
I know document.write is considered bad practice; and I'm hoping to compile a list of reasons to submit to a 3rd party vendor as to why they shouldn't use document.write in implementations of their analytics code.
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The target … overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Pods.xcconfig
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This definitely works most of the time:
Go to your target Build Settings -> Other linker flags -> double click . Add $(inherited) to a new line.
If you have problem with "...target overrides the GCC_PREPROCESSOR_DEFINITIONS build settin...
Javascript foreach loop on associative array object
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The .length property only tracks properties with numeric indexes (keys). You're using strings for keys.
You can do this:
var arr_jq_TabContents = {}; // no need for an array
arr_jq_TabContents["Main"] = jq_TabContents_Main;
arr_jq_TabContents["Guide"]...
Why doesn't nodelist have forEach?
I was working on a short script to change <abbr> elements' inner text, but found that nodelist does not have a forEach method. I know that nodelist doesn't inherit from Array , but doesn't it seem like forEach would be a useful method to have? Is there a particular implementation i...
How to change the order of DataFrame columns?
... cols
Out[13]: ['mean', 0L, 1L, 2L, 3L, 4L]
Then reorder the dataframe like this:
In [16]: df = df[cols] # OR df = df.ix[:, cols]
In [17]: df
Out[17]:
mean 0 1 2 3 4
0 0.445543 0.445598 0.173835 0.343415 0.682252 0.582616
1 0.670208 ...
Limit a stream by a predicate
...le, you can't necessarily parallelize such an operation, as you have to look at elements in order.
The API doesn't provide an easy way to do it, but what's probably the simplest way is to take Stream.iterator(), wrap the Iterator to have a "take-while" implementation, and then go back to a Splitera...
How to go back (ctrl+z) in vi/vim
... something nasty and want to return to the previous version of the text. Like BACK button in Word. I wonder how can you achieve this behaviour in Vim.
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