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Why can't an anonymous method be assigned to var?
...you like to be inferred for the following cases?
var x1 = (ref int y)=>123;
There is no Func<T> type that takes a ref anything.
var x2 = y=>123;
We don't know the type of the formal parameter, though we do know the return. (Or do we? Is the return int? long? short? byte?)
var x3 =...
How to detect Safari, Chrome, IE, Firefox and Opera browser?
...specific instructions to install an extension. Use feature detection when possible.
Demo: https://jsfiddle.net/6spj1059/
// Opera 8.0+
var isOpera = (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
// Firefox 1.0+
var isFirefox = typeof I...
Eclipse returns error message “Java was started but returned exit code = 1”
... @KadoLakatt: please provide your own answer next time. Edited my post to address your point, though.
– Calon
Feb 26 '15 at 6:51
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App Inventor 2 列表代码块 · App Inventor 2 中文网
...异常、报错。
如果给定列表是一个二维列表，如 [["abc","123"],["xyz","456"]] ，则返回的列表项也是一个列表对象，如 ["abc","123"]。
求对象在列表中的位置
返回指定对象在列表中的位置，从 1 开始，如果不在列...
Importing from a relative path in Python
...ys.path (the list of paths python looks at to import things):
import sys, os
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'Common'))
import Common
os.path.dirname(__file__) just gives you the directory that your current python file is in, and then we navigate to 'Common/' the dir...
Jenkins on OS X: xcodebuild gives Code Sign error
...your session won't have unlocked keychain even if it has you as the user (most commonly this affects ssh, but also any other process).
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Are default enum values in C the same for all compilers?
...tion:
Value of jan will be 0,feb will be 1,mar will be 2.
enum months{jan=123,feb=999,mar}
Explanation:
Value of jan will be 123,feb will be 999,mar will be 1000.
enum months{jan='a',feb='s',mar}
Explanation:
Value of jan will be 'a',feb will be 's',mar will be 't'.
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iPhone OS: How do I create an NSDate for a specific date?
...Minute, setSecond, etc. for finer granularity.
– devios1
Jul 5 '13 at 18:53
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What should I set JAVA_HOME environment variable on macOS X 10.6?
...f Java. For example, one program I'm maintaining requires 32-bit Java 5 on OS X, so when using that program, I set JAVA_HOME by running:
export JAVA_HOME=$(/usr/libexec/java_home -v 1.5)
For those of you who don't have java_home in your path add it like this.
sudo ln -s /System/Library/Framewor...
Which is the preferred way to concatenate a string in Python?
... to a string, then to a list:
a += b:
0.10780501365661621
a.append(b):
0.1123361587524414
OK, turns out that even when the resulting string is a million characters long, appending was still faster.
Now let's try with appending a thousand character long string a hundred thousand times:
a += b:
0...