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Random string generation with upper case letters and digits
... the built-in uuid package.
One Line Solution:
import uuid; uuid.uuid4().hex.upper()[0:6]
In Depth Version:
Example:
import uuid
uuid.uuid4() #uuid4 => full random uuid
# Outputs something like: UUID('0172fc9a-1dac-4414-b88d-6b9a6feb91ea')
If you need exactly your format (for example, "6U1...
How do I view 'git diff' output with my preferred diff tool/ viewer?
...AL_DIFF will be called with a fixed set of 7 arguments:
path old-file old-hex old-mode new-file new-hex new-mode
As most diff tools will require a different order (and only some) of the arguments, you will most likely have to specify a wrapper script instead, which in turn calls the real diff too...
Where in memory are my variables stored in C?
...2 return 0; } MEMORY MAP FOR ABOVE: text data bss dec hex filename 7264 1688 1040 9992 2708 a.exe MEMORY MAP FOR 2: text data bss dec hex filename 7280 1688 1040 10008 2718 a.exe MEMORY MAP FOR 3 : text data bss d...
How do I initialize a byte array in Java?
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Using a function converting an hexa string to byte[], you could do
byte[] CDRIVES = hexStringToByteArray("e04fd020ea3a6910a2d808002b30309d");
I'd suggest you use the function defined by Dave L in Convert a string representation of a hex dump to a byte ...
How to remove all line breaks from a string
...ment to be a complaint. It does what I said: remove EVERYTHING not in that HEX range. What chars that are depends on the char set of course, but this post was about ASCII.
– masi
Jan 23 '19 at 23:11
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C# binary literals
Is there a way to write binary literals in C#, like prefixing hexadecimal with 0x? 0b doesn't work.
12 Answers
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How to make a background 20% transparent on Android
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android:background="#CCFF0000" />
In the example, CC is the hexadecimal number for 255 * 0.8 = 204. Note that the first two hexadecimal digits are for the alpha channel. The format is #AARRGGBB, where AA is the alpha channel, RR is the red channel, GG is the green channel and BB is th...
Reminder - \r\n or \n\r?
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New line depends on your OS:
DOS & Windows: \r\n 0D0A (hex), 13,10 (decimal)
Unix & Mac OS X: \n, 0A, 10
Macintosh (OS 9): \r, 0D, 13
More details here: https://ccrma.stanford.edu/~craig/utility/flip/
When in doubt, use any freeware hex viewer/editor to see how a file enco...
How do you get a string from a MemoryStream?
...is can be a pitfall: It's not aware of byte order mark and might include a Hex 00 in the beginning of the string.00 3C 3F -> .<? in Hex Editor but in VS or Notepad++: <?. So you can't see the difference even if you compare the strings by eye, only a comparison tool or Hex editor will show t...
ActionBar text color
...tString(R.string.app_name) + "</font>"));
You can also use the red hex code #FF0000 instead of the word red. If you are having trouble with this, see Android Html.fromHtml(String) doesn't work for <font color='#'>text</font>.
Additionally, if you want to use a color resource, ...