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What's valid and what's not in a URI query?
...ed Characters
URIs include components and subcomponents that are delimited by characters in the "reserved" set. These characters are called "reserved" because they may (or may not) be defined as delimiters by the generic syntax, by each scheme-specific syntax, or by the implementation-specific synta...
Why is Class.newInstance() “evil”?
...#newInstance()):
Note that this method propagates any exception thrown by the nullary constructor, including a checked exception. Use of this method effectively bypasses the compile-time exception checking that would otherwise be performed by the compiler. The Constructor.newInstance method avoi...
Most simple but complete CMake example
Somehow I am totally confused by how CMake works. Every time I think that I am getting closer to understand how CMake is meant to be written, it vanishes in the next example I read. All I want to know is, how should I structure my project, so that my CMake requires the least amount of maintainance i...
Cannot refer to a non-final variable inside an inner class defined in a different method
...ass object tries to access the variables after they have been cleaned up.
By making lastPrice and price final, they are not really variables anymore, but constants. The compiler can then just replace the use of lastPrice and price in the anonymous class with the values of the constants (at compile ...
Java: Difference between the setPreferredSize() and setSize() methods in components
...ents as expected if a layout manager is present; most layout managers work by getting the preferred (as well as minimum and maximum) sizes of their components, then using setSize() and setLocation() to position those components according to the layout's rules.
For example, a BorderLayout tries to ma...
How do I Geocode 20 addresses without receiving an OVER_QUERY_LIMIT response?
...hen saving the locations -- but it also means :
You'll be able to search by geographical coordinates
i.e. "I want a list of points that are near where I'm now"
Displaying the map will be a lot faster
Even with more than 20 locations on it
Oh, and, also (last but not least) : this will work ;...
Python Pandas Error tokenizing data
...e the offending file and to correct the bad lines so that they can be read by read_csv. @PetraBarus, why not just add columns to the CSV files that are missing them (with null values as needed)?
– dbliss
Oct 6 '14 at 22:57
...
PHP Pass variable to next page
... variables. Sessions and cookies are quite easy to use, with session being by far more secure than cookies. More secure, but not completely secure.
Session:
//On page 1
$_SESSION['varname'] = $var_value;
//On page 2
$var_value = $_SESSION['varname'];
Remember to run the session_start(); stateme...
Why does Javascript's regex.exec() not always return the same value? [duplicate]
...dvantage of the fact that exec returns null when there are no more matches by performing the assignment as the loop condition.
var re = /foo_(\d+)/g,
str = "text foo_123 more text foo_456 foo_789 end text",
match,
results = [];
while (match = re.exec(str))
results.push(+match[1]);
...
Officially, what is typename for?
On occasion I've seen some really indecipherable error messages spit out by gcc when using templates... Specifically, I've had problems where seemingly correct declarations were causing very strange compile errors that magically went away by prefixing the typename keyword to the beginning of the...