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How to redirect to a 404 in Rails?
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The selected answer doesn't work in Rails 3.1+ as the error handler was moved to a middleware (see github issue).
Here's the solution I found which I'm pretty happy with.
In ApplicationController:
unless Rails.application.config.consider_all_requests_local
r...
how to change any data type into a string in python
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x = str(something)
Examples:
>>> str(1)
'1'
>>> str(1.0)
'1.0'
>>> str([])
'[]'
>>> str({})
'{}'
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From the documentation:
Return a string containing a nicely printable representation of an object. For strings, this returns the string itself. The dif...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...coding allow apache
coredump_dir /var/spool/squid
3.测试机配置：
3.1 配ip
走代理，dns也不用配置（无需地址解析）
3.2 代理设置
IE 右击属性----连接-----局域网（LAN）设置
3.3 参考文档：
3.4 主文件配置：
[root@gjp99 Server]# ll /var/sp...
Javascript: Setting location.href versus location
...ments to both location.href and location are defined to work in JavaScript 1.0, back in Netscape 2, and have been implemented in every browser since. So take your pick and use whichever you find clearest.
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Add table row in jQuery
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jQuery 3.1 still requires that a tbody be specified. Check it out here: jsfiddle.net/umaj5zz9/2
– user984003
Apr 20 '17 at 16:15
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How to set text size of textview dynamically for different screens [duplicate]
...etDimension(R.dimen.textsize));
Sample dimensions.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<dimen name="textsize">15sp</dimen>
</resources>
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Can't make the custom DialogFragment transparent over the Fragment
...lpha = 0.9f; // An alpha value to apply to this entire window. An alpha of 1.0 means fully opaque and 0.0 means fully transparent
for DialogFragment transparent
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Python: print a generator expression?
...ed Aug 30 '17 at 21:08
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Mar 2 '11 at 7:37
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Programmatically retrieve memory usage on iPhone
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Swift 3.1 (As of August 8, 2017)
func getMemory() {
var taskInfo = mach_task_basic_info()
var count = mach_msg_type_number_t(MemoryLayout<mach_task_basic_info>.size)/4
let kerr: kern_return_t = withUnsafeMutable...
getting the screen density programmatically in android?
...sources().getDisplayMetrics().density;
This will give you:
0.75 - ldpi
1.0 - mdpi
1.5 - hdpi
2.0 - xhdpi
3.0 - xxhdpi
4.0 - xxxhdpi
ref: density
ref 2
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