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Collisions when generating UUIDs in JavaScript?
...rom Math.random(). For some browsers the entropy is as low as just 41 bits all together. Calling Math.random() multiple times won't raise the entropy. If you really want unique v4 UUIDs you need to use a cryptographically strong RNG that produces at least 122bit entropy per UUID generated.
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Difference between doseq and for in Clojure
...e's answer is
(for [x [1 2 3]] (println x))
At the REPL, this will generally do what you want, but that's basically a coincidence: the REPL forces the lazy sequence produced by for, causing the printlns to happen. In a non-interactive environment, nothing will ever be printed. You can see this in...
How to check a not-defined variable in JavaScript
...ue for things that don't exist, undefined. The DOM returns null for almost all cases where it fails to find some structure in the document, but in JavaScript itself undefined is the value used.
Second, no, there is not a direct equivalent. If you really want to check for specifically for null, do:
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Jquery mouseenter() vs mouseover()
So after reading a recently answered question i am unclear if i really understand the difference between the mouseenter() and mouseover() . The post states
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Does Git publicly expose my e-mail address?
... tools like 'git send-email' are written assuming that it's true (automatically cc'ing patch authors, for instance)
– araqnid
May 22 '09 at 19:06
2
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Access properties file programmatically with Spring?
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If all you want to do is access placeholder value from code, there is the @Value annotation:
@Value("${settings.some.property}")
String someValue;
To access placeholders From SPEL use this syntax:
#('${settings.some.property...
How can I listen to the form submit event in javascript?
...'ve been looking on google how to detect if a submit button is clicked but all I found is code where you have to use onClick on onSubmit="function()" in html.
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Operator overloading in Java
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You are saying we cant create wrapper in java? Such as SmallInteger like Integer?
– huseyin tugrul buyukisik
Sep 12 '12 at 10:58
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Switch on Enum in Java [duplicate]
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You actually can switch on enums, but you can't switch on Strings until Java 7. You might consider using polymorphic method dispatch with Java enums rather than an explicit switch. Note that enums are objects in Java, not just symbol...
HTTPURLConnection Doesn't Follow Redirect from HTTP to HTTPS
...uppose the application is set up to perform client authentication automatically. The user expects to be surfing anonymously because he's using HTTP. But if his client follows HTTPS without asking, his identity is revealed to the server.
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