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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...
程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...安全级别高；
RC4，也是为 RSA Data Security, Inc. 开发的密码系统的商标名称。
传统的DES由于只有56位的密钥，从1997年开始，RSA公司发起了一个称作“向DES挑战”的竞技赛。在首届挑战赛上，罗克·维瑟用了96天时间破解了用DES加...
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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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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