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PermGen elimination in JDK 8
...
I should mention that interned strings were previously stored in the PermGen space, but were moved to the main Java heap in Java 7.
– gparyani
Sep 9 '14 at 16:07
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Unable to forward search Bash history similarly as with CTRL-r
...ds in the History":
To search backward in the history for a particular string, type C-r.
Typing C-s searches forward through the history.
The problem with Ctrl-S however is that sometimes collides with XON/XOFF flow control (in Konsole for instance). The searching is a readline feature howev...
Add querystring parameters to link_to
I'm having difficultly adding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly.
...
jQuery - selecting elements from inside a element
...provide a second argument to the jQuery selector. It can be any css object string just like you would pass for direct selecting or a jQuery element.
eg.
$("span",".cont1").css("background", '#F00');
The above line will select all spans within the container having the class named cont1.
DEMO
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Ruby class types and case statements
... the when clause. In Ruby
case item
when MyClass
...
when Array
...
when String
...
is really
if MyClass === item
...
elsif Array === item
...
elsif String === item
...
Understand that case is calling a threequal method (MyClass.===(item) for example), and that method can be defined to do wha...
E731 do not assign a lambda expression, use a def
... of the generic '<lambda>'.
This is more useful for tracebacks and string representations in
general. The use of the assignment statement eliminates the sole
benefit a lambda expression can offer over an explicit def statement
(i.e. that it can be embedded inside a larger expression)
...
Calculate total seconds in PHP DateInterval
...otalFullSeconds(
new IntervalFromRange(
new DateTimeFromISO8601String('2017-07-03T14:27:39+00:00'),
new DateTimeFromISO8601String('2017-07-05T14:27:39+00:00')
)
))
->value()
Besides being intuitive, you can also benefit from autocompletion facility of your IDE.
For ...
Call by name vs call by value in Scala, clarification needed
...e the following implementations:
object main {
def main(args: Array[String]) {
def onTime(time: Long) {
while(time != time) println("Time to Nag!")
println("no nags for you!")
}
def onRealtime(time: => Long) {
while(time != time...
Which encoding opens CSV files correctly with Excel on both Mac and Windows?
...king good with special characters and separated fields. I start my output string with "\ufeff" as a byte order mark (BOM), then using "\t" tabs in place of commas for field separation, and encoding the file with "utf-16LE". Works like a charm, thanks to this page!
– Geek Stoc...
How to declare a friend assembly?
....GetName();
Console.WriteLine("{0}, PublicKey={1}",
assemblyName.Name,
string.Join("", assemblyName.GetPublicKey().Select(m => string.Format("{0:x2}", m))));
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