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What's wrong with using == to compare floats in Java?
...t there is no exact way to represent most decimal numbers like .1, .2, .3, etc. All you can do is approximate in binary. The system does a little fudge-rounding when the numbers print so that it displays .1 instead of .10000000000001 or .999999999999 (which are probably just as close to the stored...
HTML Script tag: type or language (or omit both)?
...ocument. Depending on what DOCTYPE you use, the type value is required in order to validate the HTML document.
The language attribute lets the browser know what language you are using (Javascript vs. VBScript) but is not necessarily essential and, IIRC, has been deprecated.
...
Logging in Scala
...ries have been some wrappers around a Java logging framework (slf4j, log4j etc), but as of March 2015, the surviving log libraries are all slf4j. These log libraries provide some sort of log object to which you can call info(...), debug(...), etc. I'm not a big fan of slf4j, but it now seems to be t...
How to debug JavaScript / jQuery event bindings with Firebug or similar tools?
...has color-coded highlights for different types of events (mouse, keyboard, etc.). When you hover over them, it shows the body of the event handler, how it was attached, and the file/line number (on WebKit and Opera). You can also trigger the event manually.
It can't find every event because there's...
How to specify table's height such that a vertical scroll bar appears?
...nstead of applying it to the table tag, it should be done to the tbody, in order to allow the header to remain static when scrolling. Then there's some styling to sort out with regard to the area in the thead that is above the scroll bar.
– David
Oct 9 '12 at 1...
How to add double quotes to a string that is inside a variable?
...ar string1 = @"""inside quotes""";
var string2 = "\"inside quotes\"";
In order to perhaps make it a bit more clear what happens:
var string1 = @"before ""inside"" after";
var string2 = "before \"inside\" after";
share
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Bash script error [: !=: unary operator expected
...nding '-v' anywhere (provided it exists). This means command line argument order is not important. Be forewarned, as presented, the variable arg_match is set, thus it is merely a flag. It allows for multiple occurrences of the '-v' arg. One could ignore all other occurrences of '-v' easy enough.
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Why is using the JavaScript eval function a bad idea?
... for injection attacks
Debugging can be more challenging
(no line numbers, etc.)
eval'd code executes slower (no opportunity to compile/cache eval'd code)
Edit: As @Jeff Walden points out in comments, #3 is less true today than it was in 2008. However, while some caching of compiled scripts may ha...
Windows equivalent of the 'tail' command
...
Commands such as P, S, etc. can only be input by the user at the prompt. They cannot be passed-in to the more command. Thus, the example above does not work
– Philibert Perusse
Jul 23 '12 at 22:16
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Difference between Node object and Element object?
... are many other types of nodes (text nodes, comment nodes, document nodes, etc...).
The DOM consists of a hierarchy of nodes where each node can have a parent, a list of child nodes and a nextSibling and previousSibling. That structure forms a tree-like hierarchy. The document node would have its...