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How to detect internet speed in JavaScript?
...ew Date()).getTime();
showResults();
}
download.onerror = function (err, msg) {
ShowProgressMessage("Invalid image, or error downloading");
}
startTime = (new Date()).getTime();
var cacheBuster = "?nnn=" + startTime;
download.src = imageAdd...
django unit tests without a db
...
This error raises when you have tests that need database transactions. Obviously if you don't have a DB, you're not going to be able to run those tests. You should run your tests separately. If you just run your test by using pyth...
What is the meaning of id?
...xample, with a void * pointer you can't do this:
void *x;
char *y = x; // error, this needs an explicit cast
On the contrary, it's possible with id:
id x;
NSString *y = x;
See more usage of type id in objective c examples.
In addition in the "modern" Objective C it's preferred to use instance...
How to check internet access on Android? InetAddress never times out
... run the ping command through the command line utility, I get a permission error. The command is also not working on emulators. Be careful using this solution.
– Eren Yilmaz
Jun 30 '15 at 14:40
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What is the PostgreSQL equivalent for ISNULL()
... search-and-replace isnull with coalesce, you can potentially get a lot of errors...
– Stefan Steiger
Feb 20 '19 at 16:02
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show 2 more comm...
How does functools partial do what it does?
..."<pyshell#80>", line 1, in <module>
pfnx(4, 5)
TypeError: fnx() got multiple values for keyword argument 'a'
another use case: writing distributed code using python's multiprocessing library. A pool of processes is created using the Pool method:
>>> import multipr...
Regex: Specify “space or start of string” and “space or end of string”
...n, replace (?<=\s|^) with (?:(?<=\s)|(?<=^)). Otherwise, you get error: look-behind requires fixed-width pattern
– user2426679
Aug 31 '16 at 20:06
5
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In C#, should I use string.Empty or String.Empty or “” to intitialize a string?
...rite case string.Empty: because it's not a constant. You get a Compilation error : A constant value is expected
Look at this link for more info:
string-empty-versus-empty-quotes
share
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improve thi...
Strange \n in base64 encoded string in Ruby
...k me literally 1 hour to figure out what's wrong and then searched for the error. This comment is helping understand legacy issues even after 6 years.
– burglarhobbit
Oct 14 '16 at 14:42
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What is the difference between Scrum and Agile Development? [closed]
...e project and starting from the beginning. There’s no room for change or error, so a project outcome and an extensive plan must be set in the beginning and then followed careful
ACP Agile Certification came about as a “solution” to the disadvantages of the waterfall methodology. Instead of a ...