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Why am I getting “Cannot Connect to Server - A network-related or instance-specific error”?
I get the following error when trying to connect to SQL Server:
38 Answers
38
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Should I declare Jackson's ObjectMapper as a static field?
...per.
They are fully immutable, thread-safe, meaning that it is not even theoretically possible to cause thread-safety issues (which can occur with ObjectMapper if code tries to re-configure instance).
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Control the dashed border stroke length and distance between strokes
Is it possible to control the length and distance between dashed border strokes in CSS?
8 Answers
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How do I check if an HTML element is empty using jQuery?
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if ($('#element').is(':empty')){
//do something
}
for more info see http://api.jquery.com/is/ and http://api.jquery.com/empty-selector/
EDIT:
As some have pointed, the browser interpretation of an empty element can vary. If you would like to ignore invisible elements such a...
Is it ok to use dashes in Python files when trying to import them?
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You should check out PEP 8, the Style Guide for Python Code:
Package and Module Names Modules should have short, all-lowercase names. Underscores can be used in the module name if it improves readability. Python packages should also have short, all-lowercase names, alt...
How do I concatenate const/literal strings in C?
I'm working in C, and I have to concatenate a few things.
17 Answers
17
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What is an idiomatic way of representing enums in Go?
...cessive untyped integer constants. It is reset to 0 whenever the reserved word const appears in the source and increments after each ConstSpec. It can be used to construct a set of related constants:
const ( // iota is reset to 0
c0 = iota // c0 == 0
c1 = iota // c1 == 1
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A Regex that will never be matched by anything
...ion is expensive -- it will scan the entire line, find the end-of-line anchor, and only then not find the a and return a negative match. (See comment below for more detail.)
* Originally I did not give much thought on multiline-mode regexp, where $ also matches the end of a line. In fact, it woul...
How do I execute a Git command without being in the repository?
Is there a way to execute Git commands against a repository without being in that repository?
6 Answers
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How can I trim beginning and ending double quotes from a string?
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You can use String#replaceAll() with a pattern of ^\"|\"$ for this.
E.g.
string = string.replaceAll("^\"|\"$", "");
To learn more about regular expressions, have al ook at http://regular-expression.info.
That said, this smells a bit like that you're trying to invent a CSV parser...