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How to set the java.library.path from Eclipse
How can I set the java.library.path for a whole Eclipse Project? I'm using a Java library that relies on OS specific files and need to find a .dll/ .so/ .jnilib . But the Application always exits with an error message that those files are not found on the library path.
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How to solve javax.net.ssl.SSLHandshakeException Error?
...service and i bind to UI. And also I integrated PayPal with my application for make Express checkout when I make a call for payment I'm facing this error. I use servlet for back-end process. Can any one say how to fix this issue?
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How can I remove all objects but one from the workspace in R?
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I just spent several hours hunting for the answer to a similar but slightly different question - I needed to be able to delete all objects in R (including functions) except a handful of vectors.
One way to do this:
rm(list=ls()[! ls() %in% c("a","c")])
Whe...
What does an exclamation mark mean in the Swift language?
...'apartment'
The actual Person value can be unwrapped in various ways:
"forced unwrapping": john! (gives the Person value if it exists, runtime error if it is nil)
"optional binding": if let p = john { println(p) } (executes the println if the value exists)
"optional chaining": john?.learnAboutSw...
What are the most-used vim commands/keypresses?
...the gargantuan lists of things you can do in VIM and all of the keypresses for them. I'm tired of hearing "You can use 'I' for inserting text, or 'a' for appending text after the character, or 'A' for appending text at the end of the line, or…" I can't imagine everyone uses all 20 different keypre...
SQLite DateTime comparison
... but does have a few datetime functions. Follow the string representation formats (actually only formats 1-10) understood by those functions (storing the value as a string) and then you can use them, plus lexicographical comparison on the strings will match datetime comparison (as long as you don't...
How do I concatenate two text files in PowerShell?
...rsions allowed this to be done more concisely using the aliases cat and sc for Get-Content and Set-Content respectively, but these aliases are deprecated and even removed in new versions, so it's best to avoid them.
Note 2: Be careful with wildcards - if you try to output to examples.txt (or similar...
Jackson - Deserialize using generic class
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You need to create a TypeReference object for each generic type you use and use that for deserialization. For example -
mapper.readValue(jsonString, new TypeReference<Data<String>>() {});
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What is the difference between synchronous and asynchronous programming (in node.js)
...e itself is single threaded, there are some task that can run in parallel. For example, File System operations occur in a different process.
That's why Node can do async operations: one thread is doing file system operations, while the main Node thread keeps executing your javascript code. In an ...
Which is the fastest algorithm to find prime numbers?
...re efficient than the Sieve of Eratosthenes. His page has some benchmark information.
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