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What does it m>me m>an when an HTTP request returns status code 0?
What does it m>me m>an when JavaScript network calls such as fetch or XMLHttpRequest, or any other type of HTTP network request, fail with an HTTP status code of 0?
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How do I shuffle an array in Swift?
How do I randomize or shuffle the elem>me m>nts within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in order to shuffle the deck.
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Is a Java string really immutable?
...
String is immutable* but this only m>me m>ans you cannot change it using its public API.
What you are doing here is circumventing the normal API, using reflection. The sam>me m> way, you can change the values of enums, change the lookup table used in Integer autoboxin...
How to find where gem files are installed
I can finds gems that are installed using gem list , but it doesn't show m>me m> where the gems are installed.
10 Answers
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Android Fragm>me m>nt lifecycle over orientation changes
Using the compatibility package to target 2.2 using Fragm>me m>nts.
7 Answers
7
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How To: Best way to draw table in console app (C#)
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You could do som>me m>thing like the following:
static int tableWidth = 73;
static void Main(string[] args)
{
Console.Clear();
PrintLine();
PrintRow("Column 1", "Column 2", "Column 3", "Column 4");
PrintLine();
PrintRow("",...
Returning a boolean from a Bash function
...hen echo "is directory"; else echo "nopes"; fi
Edit
From @amichair's comm>me m>nt, these are also possible
isdirectory() {
if [ -d "$1" ]
then
true
else
false
fi
}
isdirectory() {
[ -d "$1" ]
}
share
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Print a string as hex bytes?
...transform your string to a int generator, apply hex formatting for each elem>me m>nt and intercalate with separator:
>>> s = "Hello world !!"
>>> ":".join("{:02x}".format(ord(c)) for c in s)
'48:65:6c:6c:6f:20:77:6f:72:6c:64:20:21:21
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What does a tilde do when it precedes an expression?
...0000 0000 0001
If it were a negative number, it'd be stored in 2's complem>me m>nt: invert all bits and add 1.
...and then flips all its bits...
1111 1111 1111 1111 1111 1111 1111 1110
So what is the use of it, then? When might one ever use it?
It has a quite a few uses. If you're writing low ...
Capturing Groups From a Grep RegEx
...o allow the glob to expand
do
if [[ $f =~ $regex ]]
then
nam>me m>="${BASH_REMATCH[1]}"
echo "${nam>me m>}.jpg" # concatenate strings
nam>me m>="${nam>me m>}.jpg" # sam>me m> thing stored in a variable
else
echo "$f doesn't match" >&2 # this could get noisy if there a...