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How to concatenate multiple lines of output to one line?
...attern , I get many lines of output. How do you concatenate all lines into one line, effectively replacing each "\n" with "\" " (end with " followed by space)?
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Multi-line string with extra space (preserved indentation)
...asy way is something like this:
USAGE=$(cat <<-END
This is line one.
This is line two.
This is line three.
END
)
If you indent your string with tabs (i.e., '\t'), the indentation will be stripped out. If you indent with spaces, the indentation will be left in.
NOTE: It is sign...
How to use ADB Shell when Multiple Devices are connected? Fails with “error: more than one device an
...adb -e shell or adb emu <command>. They'll fail if there's more than one emulator going and you'll have to fall back to -s
– Corey Ogburn
Jun 3 '16 at 20:23
1
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How do I get ruby to print a full backtrace instead of a truncated one?
...
You could also do this if you'd like a simple one-liner:
puts caller
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How do I call one constructor from another in Java?
... = x;
}
}
To chain to a particular superclass constructor instead of one in the same class, use super instead of this. Note that you can only chain to one constructor, and it has to be the first statement in your constructor body.
See also this related question, which is about C# but where th...
Can C++ code be valid in both C++03 and C++11 but do different things?
...n the appendix C of the standard. Even though there are many more negative ones than positive, each one of them is much less likely to occur.
String literals
#define u8 "abc"
const char* s = u8"def"; // Previously "abcdef", now "def"
and
#define _x "there"
"hello "_x // Previously "hello there", no...
How do I list one filename per output line in Linux?
...
Use the -1 option (note this is a "one" digit, not a lowercase letter "L"), like this:
ls -1a
First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use man ls or ls --help or ch...
How to allow only one radio button to be checked?
... radio buttons, which messed me up. It is supposed to only let me check on one radio button and I had that somehow but I lost it. Any help? Thank you.
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What does principal end of an association means in 1:1 relationship in Entity framework
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In one-to-one relation one end must be principal and second end must be dependent. Principal end is the one which will be inserted first and which can exist without the dependent one. Dependent end is the one which must be inser...
Why does GCC generate such radically different assembly for nearly the same C code?
...ey are so different, first we must understand how GCC optimizes fast_trunc_one().
Believe it or not, fast_trunc_one() is being optimized to this:
int fast_trunc_one(int i) {
int mantissa, exponent;
mantissa = (i & 0x07fffff) | 0x800000;
exponent = 150 - ((i >> 23) & 0xff);...