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Psql list all tables
...ate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privileges"
FROM pg_catalog.pg_database d
ORDER BY 1;
**************************
so you can see that psql is searching pg_catalog.pg_database when it gets a list of databases. Similarly, f...
How to start an Intent by passing some parameters to it?
...ivity
Intent myIntent = getIntent(); // gets the previously created intent
String firstKeyName = myIntent.getStringExtra("firstKeyName"); // will return "FirstKeyValue"
String secondKeyName= myIntent.getStringExtra("secondKeyName"); // will return "SecondKeyValue"
If your parameters are ints you w...
Difference between DateTime and Time in Ruby
...or converting times to XML (for XMLTV files)
# Will take a date time as a string or as a Time or DateTime object and
# format it appropriately for xmtlv.
# For example, the 22nd of August, 2006 at 20 past midnight in the British Summertime
# timezone (i.e. GMT plus one hour for DST) gives: "200608...
Array vs. Object efficiency in JavaScript
...
var newNo = Math.floor(Math.random()*60000+10000);
if (!o[newNo.toString()]) o[newNo.toString()] = {id: newNo, name: 'test'};
if (!a2[newNo]) a2[newNo] = {id: newNo, name: 'test' };
a1.push({id: newNo, name: 'test'});
}
Original Post - Explanation
There are some misconceptions...
Printing everything except the first field with awk
...for loop:
awk '{for (i=2; i<=NF; i++) print $i}' filename
So if your string was "one two three", the output will be:
two
three
If you want the result in one row, you could do as follows:
awk '{for (i=2; i<NF; i++) printf $i " "; print $NF}' filename
This will give you: "two three"
...
What can I do with a moved-from object?
... May-be should be a separate question, but does that mean: if I have a string with char* buffer; and int length; members, then my move constructor/assignment must swap (or set) the value of both? Or would it be OK, if the length was unspecified (meaning that empty and size return meaningless val...
How to center a (background) image within a div?
... If you want the entire div to be filled with the image and no extra space you should use background-size: cover; If you want the entire image to show without any part of the image being cut off or stretched you want to use background-size: contain;
– Zlerp
...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...t want to do:
"$*" gives all of the arguments stuck together into a single string (separated by spaces, or whatever the first character of $IFS is). This looses the distinction between spaces within arguments and the spaces between arguments, so is generally a bad idea. Although it might be ok for p...
How to round to 2 decimals with Python?
...en(str(val))-1), digits)
Basically this adds a really small value to the string to force it to round up properly on the unpredictable instances where it doesn't ordinarily with the round function when you expect it to. A convenient value to add is 1e-X where X is the length of the number string y...
How do I enable standard copy paste for a TextView in Android?
... cManager.setPrimaryClip(cData);
Util.toast(mContext, string.text_copyed);
return true;
}
});
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