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“Origin null is not allowed by Access-Control-Allow-Origin” error for request made by application ru
...nsole, I get the origin null is not allowed by Access-Control-Allow-Origin error.
– thandasoru
Apr 2 '12 at 6:08
3
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Exclude folders from Eclipse search
... save any search time, and you'll get .git/.../filename.file doesn't exist errors because the search cache (I think?) still considers the .git folder to be a valid place to look.
– coredumperror
May 10 '12 at 0:33
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Do I cast the result of malloc?
...ong).
It makes you repeat yourself, which is generally bad.
It can hide an error if you forgot to include <stdlib.h>. This can cause crashes (or, worse, not cause a crash until way later in some totally different part of the code). Consider what happens if pointers and integers are differently...
What does a script-Tag with src AND content mean?
...this differently. Some run the content only if the src is included without error. Some run it after attempting to include the src script, regardless of success. Since this behaviour is unreliable (and prohibited in HTML5), it should be avoided.
Google isn't relying an any specific behaviour. Since ...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
...
Parsing ifconfig output is error-prone, for instance the above one-liner results in -bash: export: overruns:0': not a valid identifier` for me on RHEL6. Parsing /sys/class/net/$dev/statistics (see the perl script in @ephemient answer) directly works mu...
What is the (function() { } )() construct in JavaScript?
...ser, we can determine these phases in our code by watching out for parsing errors, hoisting and run time errors. I personally haven't found many resources on this because it's too low level and it's not something that the programmer can control. You can find some sort of explanation in this SO post:...
What is the use of the %n format specifier in C?
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For some reason the sample raises error with note n format specifies disabled. What's the reason?
– Johnny_D
Jul 20 '14 at 19:46
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How to atomically delete keys matching a pattern using Redis
...ry in your Redis server, you'll run into the "too many elements to unpack" error. In that case, do:
for _,k in ipairs(redis.call('keys', ARGV[1])) do
redis.call('del', k)
end
As Kikito suggested.
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Finding the max value of an attribute in an array of objects
...swer, however, you would like to pass an initial value or you would get an error in case the data array is empty. i.e. for an autoincrement index of objects. const max = data.reduce((prev, current) => (prev.y > current.y) ? prev : current, 1)
– juliangonzalez
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What does the exclamation mark do before the function?
...ight be tempted to try this:
function () {}()
but it results in a SyntaxError.
Using the ! operator before the function causes it to be treated as an expression, so we can call it:
!function () {}()
This will also return the boolean opposite of the return value of the function, in this case t...