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Space between two rows in a table?
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From Mozilla Developer Network:
The border-spacing CSS property specifies the distance between the borders of adjacent cells (only for the separated borders model). This is equivalent to the cellspacing attribute in prese...
What is the proper way to check if a string is empty in Perl?
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The very concept of a "proper" way to do anything, apart from using CPAN, is non existent in Perl.
Anyways those are numeric operators, you should use
if($foo eq "")
or
if(length($foo) == 0)
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Bash script processing limited number of commands in parallel
... shell would wait until those are completed before starting the next set.
From the GNU manual:
wait [jobspec or pid ...]
Wait until the child process specified by each process ID pid or job specification jobspec exits and return the exit status of the last
command waited for. If a job spe...
return query based on date
...ives us current time in milliseconds
We want to subtract 5 minutes (in ms) from that: 5*60*1000 -- I just multiply by 60 seconds so its easy to change. I can just change 5 to 120 if I want 2 hours (120 minutes).
new Date().getTime()-60*5*1000 gives us 1484383878676 (5 minutes ago in ms)
Now we nee...
How to check whether a file or directory exists?
...If I told you "Simple way to get rich quick: put money in bank. take money from bank." you would think I was telling you that there were two serial steps required rather than two alternative steps. The problem with this answer is that readers may not understand that you are suggesting two different...
Android Center text on canvas
...2)) ;
//((textPaint.descent() + textPaint.ascent()) / 2) is the distance from the baseline to the center.
canvas.drawText("Hello", xPos, yPos, textPaint);
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Git clone without .git directory
...lies --single-branch, you can un-imply it with --no-single-branch. (Taken from the git clone man page)
– Robert Stoddard
Jul 20 '16 at 22:00
9
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Vim: Creating parent directories on save
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Note the conditions: expand("<afile>")!~#'^\w\+:/' will prevent vim from creating directories for files like ftp://* and !isdirectory will prevent expensive mkdir call.
Update: sligtly better solution that also checks for non-empty buftype and uses mkdir():
function s:MkNonExDir(file, buf)
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In ASP.NET, when should I use Session.Clear() rather than Session.Abandon()?
...nd event is triggered.
Session.Clear() just removes all values (content) from the Object. The session with the same key is still alive.
So, if you use Session.Abandon(), you lose that specific session and the user will get a new session key. You could use it for example when the user logs out.
U...
css label width not taking effect
...and so they don't take a width. Maybe try using "display: block" and going from there.
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