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Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...ely easy to reliably obtain exclusive locks without worrying about cleanup etc. There are examples on the man page as to how to use it in a shell script.
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Link vs compile vs controller
... directive itself, eg: module.directive('myDirective', function($window) { etc.... This can then be accessed from inside the link function.
– Mike Chamberlain
Dec 2 '13 at 4:35
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“Public key certificate and private key doesn't match” when using Godaddy issued certificate [closed
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i keep getting an error WARNING: can't open config file: /etc/pki/tls/openssl.cnf
– t q
Mar 25 '14 at 0:51
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pinpointing “conditional jump or move depends on uninitialized value(s)” valgrind message
...ed in C all the time (examples: padding in structures, the realloc() call, etc.) so those warnings would not be very useful due to the false positive frequency.
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Are there any style options for the HTML5 Date picker?
...calendar icon which didn't seem possible with properties like color, fill, etc.
I did eventually figure out that some filter properties will adjust the icon so while i did not end up figuring out how to make it any color, luckily all I needed was to make it so the icon was visible on a dark backg...
All falsey values in JavaScript
...an function on the value. How those values behave in the context of !, if, etc. is already implied by their name: They are "falsy" values. I'm a bit afraid that others will read the answer and think "Oh so in this context (!, if, ?...:), the value is false, but with !!, it's true", but don't underst...
static allocation in java - heap, stack and permanent generation
... they are given enough memory space to store the return type of the method,etc.
That is inaccurate (or at least, you are not expressing yourself clearly).
If some method accesses a static member variable, what it gets is either a primitive value or an object reference. This may be assigned to an...
Switching a DIV background image with jQuery
... if using a sprite).
CSS with different images
.div {
/* button size etc properties */
}
.expanded {background: url(img/x.gif) no-repeat left top;}
.collapsed {background: url(img/y.gif) no-repeat left top;}
Or CSS with image sprite
.div {
background: url(img/sprite.gif) no-repeat left...
.NET unique object identifier
...ct. I don't know of any way of converting this into anything like a string etc. The value of the reference will change during compaction (as you've seen), but every previous value A will be changed to value B, so as far as safe code is concerned it's still a unique ID.
If the objects involved are u...
Responsive css background images
...ave defined a bg-image for the content) also responsive. Unfortunately I really don't have any idea on how to do this except for one thing that I can think of but it's quite a workaround. Creating multiple images and then using css screen size to change the images but I wanna know if there is a more...