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Why are regular expressions so controversial? [closed]
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123
Making Regexes Maintainable
A major advance toward demystify the patterns previously referred...
Where does Java's String constant pool live, the heap or the stack?
...mple, if you init the following objects:
String s1 = "abc";
String s2 = "123";
String obj1 = new String("abc");
String obj2 = new String("def");
String obj3 = new String("456);
String literals s1 and s2 will go to string constant pool, objects obj1, obj2, obj3 to the heap. All of them, will be r...
Separate REST JSON API server and client? [closed]
...r backend in order to enable a fast path to #2.
– Rhb123
Jun 8 '12 at 18:12
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Is volatile expensive?
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123
On Intel an un-contended volatile read is quite cheap. If we consider the following simple ca...
Why are C# 3.0 object initializer constructor parentheses optional?
...pose we wanted to add a new prefix operator to C# called "frob":
x = frob 123 + 456;
(UPDATE: frob is of course await; the analysis here is essentially the analysis that the design team went through when adding await.)
"frob" here is like "new" or "++" - it comes before an expression of some sor...
Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
... and accepts standard RGB colors in the form of strings. For example: "rgb(123,45,76)" or "rgba(45,15,74,0.45)".
Shades colors to white or black by percentage.
Blends colors together by percentage.
Does Hex2RGB and RGB2Hex conversion at the same time, or solo.
Accepts 3 digit (or 4 digit w/ alpha) H...
Parameterize an SQL IN clause
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123
That will be hella slow
– Matt Rogish
Dec 3 '08 at 16:43
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Read an Excel file directly from a R script
....7239 148.0940 255.0124 100
# readxl 122.0238 122.8448 132.4021 123.6964 130.2881 214.5138 100
# gdata 2004.4745 2042.0732 2087.8724 2062.5259 2116.7795 2425.6345 100
So readxl is the winner, with openxlsx competitive and gdata a clear loser. Taking each measure relative to th...
乐高机器人®组件 · App Inventor 2 中文网
... 隐私策略和使用条款 技术支持 service@fun123.cn
What is the 'dynamic' type in C# 4.0 used for?
...'ve been using C# so long that it just feels "wrong" to me.
dynamic foo = 123;
foo = "bar";
OK, so you most likely will not be writing code like the above very often. There may be times, however, when variable reuse can come in handy or clean up a dirty piece of legacy code. One simple case I run...