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sed error: “invalid reference \1 on `s' command's RHS”
...use -r you don't have to escape the parentheses.
– qräbnö
Jan 13 '18 at 12:52
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Flask-SQLAlchemy how to delete all rows in a single table
... Sep 17 '19 at 18:25
Ilja Everilä
36.6k55 gold badges7272 silver badges8686 bronze badges
answered May 15 '13 at 19:55
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Simple way to encode a string according to a password?
...re cipher. It is one of the strongest of the simple ancient ciphers.
Vigenère cipher
It's quick and easy to implement. Something like:
import base64
def encode(key, string):
encoded_chars = []
for i in xrange(len(string)):
key_c = key[i % len(key)]
encoded_c = chr(ord(st...
RESTful on Play! framework
...tUser method based on the Accept header?
– Timo Westkämper
Dec 7 '10 at 21:19
it is, but not entirely reliable. If pl...
HTML Submit-button: Different value / button-text?
...re suggestion in comments:
<input type="submit" name="add_tag" value="Lägg till tag" />
In your server side, you'll do something like:
if (request.getParameter("add_tag") != null)
tags.addTag( /*...*/ );
(Since I don't know that language (java?), there may be syntax errors.)
I woul...
BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区,为创新赋能!
.../EDR
广播响应包数据格式与广播数据格式一样,可以用于拓展广播数据大小,数据最大同样为31字节。
通常动态数据使用常规广播包发送,固定数据则使用响应包进行发送。广播间隔BLE设备每次广播时,会在3个广播信道(37/38/3...
Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
...d:
Hi,
In message "[ruby-talk:02706] X++?"
on 00/05/10, Aleksi Niemelä <aleksi.niemela@cinnober.com> writes:
|I got an idea from http://www.pragprog.com:8080/rubyfaq/rubyfaq-5.html#ss5.3
|and thought to try. I didn't manage to make "auto(in|de)crement" working so
|could somebody help h...
FloatActionBtn 扩展:悬浮操作按钮扩展,可自定义颜色、大小、图标和位置 ...
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛,有思想、有深度
...一个实用性较强的健康类软件或对“健身宝”进行进一步拓展以实现一个具有完整功能的健身宝程序。【参考资源】【参一】微数据库
微数据库(TinyDB)是一个非可视组件,用来保存程序中的数据。
用App Inventor创建...
AVAudioPlayer throws breakpoint in debug mode
...still stopped at the play instruction...
– Reinhard Männer
Oct 15 '14 at 6:46
Which fields were required? All of them...
