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How do I fix the “You don't have write permissions into the /usr/bin directory” error when installin
I'm trying to install Rails 3 on a brand new MacBook Pro running OS X 10.6.3, Ruby 1.8.7, and Rails 2.3.5 and I'm wondering if I've hosed myself. So far, I've run these commands:
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How to convert NSNumber to NSString
...mber:1
My bool(NO) NSNumber:0
Int:132, Float:-4.823 Bool:1
Works on both Mac and iOS
This one does not work:
NSString *myNSNumber2 = [NSNumber numberWithFloat:-34512.23f];
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Ruby: How to get the first character of a string
...ut everybody else who would like to learn from that question. For example, Mac OS X comes bundled with Ruby 1.8, so no installation is required for these users.
– Marc-André Lafortune
Apr 28 '10 at 17:11
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How to disable JavaScript in Chrome Developer Tools?
...een around as of April 2016 or so.
Open DevTools.
Press Command+Shift+P (Mac) or Control+Shift+P (Windows, Linux) to open the Command Menu. Make sure that your cursor's focus is on the DevTools window, not your browser viewport.
Type Disable JavaScript (or some version of that... it's a fuzzy sear...
Jump into interface implementation in Eclipse IDE
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Here is what I do:
I press command (on Mac, probably control on PC) and then hover over the method or class. When you do this a popup window will appear with the choices "Open Declaration", "Open Implementation", "Open Return Type". You can then click on what yo...
Get the date (a day before current time) in Bash
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Erros on macOS Sierra: date: illegal option -- -
– kuanb
May 3 '17 at 20:33
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LEGO EV3 机器人传感器面板 · App Inventor 2 中文网
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注意事项
蓝牙配对：首次连接需要在系统设置中配对 EV3，默认密码为 1234
传感器端口：确保传感器连接到正确的端口，否则无法读取数据
定时器间隔：200ms 的间隔可以保证流畅的数据更新，如需更快响应...
Auto Generate Database Diagram MySQL [closed]
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On a Mac, SQLEditor will do what you want.
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Error when trying vagrant up
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This fixed my issue on mac while working with local and remote boxes
– DWils
Nov 17 '16 at 0:13
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Which is the correct shorthand - “regex” or “regexp” [closed]
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Man regexp on my mac turns up a Tcl man page. Hmmm...maybe that's not an endorsement.
– dmckee --- ex-moderator kitten
Jun 17 '10 at 2:12
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