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“new” keyword in Scala
...fferent things
> println(new Foo)
test@5c79cc94
> println(Foo())
7
And, since you mentioned Java classes: yes -- Java classes rarely have
companion objects with an apply method, so you must use new and the actual
class's constructor.
...
Difference between and ?
Every time I have to add a handler or module for ASP.NET with IIS7, the instructions always tell me to incorporate it into two sections: system.web and system.webserver .
...
How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
Based on the examples from this page , I have the working and non-working code samples below.
14 Answers
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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
... map’s drawn view. The value is a list of lists containing the northwest and southeast coordinates of the current view in the form ((North West) (South East)).设置或获取地图的边界，值是一个包含了西北和东南坐标的嵌套列表，格式为((北西)(南东))CenterFromString地...
CALL command vs. START with /WAIT option
How is the START command with a WAIT option
6 Answers
6
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How to differentiate between time to live and time to idle in ehcache
...ld 1.1 documentation (available in Google Cache, which is easier to browse and more informative than the current docs AFAIK):
timeToIdleSeconds
This is an optional attribute.
Legal values are integers between 0 and Integer.MAX_VALUE.
It is the number of seconds that an Element sho...
Using str_replace so that it only acts on the first match?
... Another downside is you have to use preg_quote() on the "needle" and escape meta-characters $ and \ in the replacement.
– Josh Davis
Aug 10 '09 at 2:53
32
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Find out whether Chrome console is open
...roach works on Chrome 78, with the added advantage of detecting both close and open events.
function toString (2019)
Credit to Overcl9ck's comment on this answer. Replacing the regex /./ with an empty function object still works.
var devtools = function() {};
devtools.toString = function() {
i...
Is there hard evidence of the ROI of unit testing?
...s that is has significant value. I have to convince the other programmers and, more importantly, the bean-counters in management, that all the extra time spent learning the testing framework, writing tests, keeping them updated, etc.. will pay for itself, and then some.
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What Computer Science concepts should I know? [closed]
... etc). You should be able to produce sensible OO designs as well as understanding the concepts.
Scripting and regexes.
Data structures -- lists, sets, hashtables, trees, graphs, and so on -- as well as Big O notation and algorithmic complexity.
Bits, bytes and binary numbers -- how numbers are repre...