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Javascript !instanceof If Statement
...or.
if (obj !instanceof Array) {
// do something
}
This is a syntax error. Operators such as != are a single operator, as opposed to a NOT applied to an EQUALS. There is no such operator as !instanceof in the same way as there is no !< operator.
...
Http Basic Authentication in Java using HttpClient?
...hink version 3 is still actively supported).
A 500 status code is a server error, so it might be useful to see what the server says (any clue in the response body you're printing?). Although it might be caused by your client, the server shouldn't fail this way (a 4xx error code would be more appropr...
List of Java class file format major version numbers?
...y to load something compiled for java 6 in a java 5 runtime you'll get the error, incompatible class version, got 50, expected 49. Or something like that.
See here in byte offset 7 for more info.
Additional info can also be found here.
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How to avoid reinstalling packages when building Docker image for Python projects?
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I am getting this Error :- failed to solve with frontend dockerfile.v0: failed to create LLB definition: Dockerfile parse error line 10: Unknown flag: mount
– Mayur Dangar
Jun 18 at 17:10
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Clone private git repo with dockerfile
...5 seconds which bitbucket often exceeded. ssh-keyscan won't even report an error. So better run RUN ssh-keyscan -T 60 bitbucket.org >> /root/.ssh/known_hosts to be safe.
– fluidsonic
Feb 26 '15 at 17:05
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How do I obtain a Query Execution Plan in SQL Server?
In Microsoft SQL Server how can I get a query execution plan for a query / stored procedure?
12 Answers
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What is Haskell used for in the real world? [closed]
...ation is a really nice feature:
Even if something would usually cause an error, it will still work as long as you don't use the result. For example, you could put 1 / 0 as the first item of a list and it will still work if you only used the second item.
It is easier to write search programs such a...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
..._init__(self):
CrawlSpider.__init__(self)
self.verificationErrors = []
self.selenium = selenium("localhost", 4444, "*chrome", "http://www.domain.com")
self.selenium.start()
def __del__(self):
self.selenium.stop()
print self.verificationErrors
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Declaring variables inside loops, good practice or bad practice?
...ble scope is limited to inside the loop, and therefore will issue a proper error message if the variable is by mistake referenced elsewhere.
Last but not least, some dedicated optimization can be performed more efficiently by the compiler (most importantly register allocation), since it knows that t...
Heroku Postgres - terminate hung query (idle in transaction)
...sion of postgres are you using? (hint: select version()). Do you get any error messages when using pg_cancel_backend?
– tobixen
Jul 2 '12 at 12:21
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