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Default height for section header in UITableView
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From checking the defaults in my app it looks like for a grouped table the default is a height of 22 and for a non-grouped table the default is a height of 10.
If you check the value of the property sectionHeaderHeight on your tableview that should tell yo...
Is a Java string really immutable?
..., change the lookup table used in Integer autoboxing etc.
Now, the reason s1 and s2 change value, is that they both refer to the same interned string. The compiler does this (as mentioned by other answers).
The reason s3 does not was actually a bit surprising to me, as I thought it would share th...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
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Sebastian Karlsson
53944 silver badges1212 bronze badges
answered Jan 7 '09 at 2:15
coobirdcoobird
148k3232 gold ba...
Convert Dictionary to semicolon separated string in c#
... Join:
String s = myDict.Select(x => x.Key + "=" + x.Value).Aggregate((s1, s2) => s1 + ";" + s2);
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C#: how to get first char of a string?
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Try this,
string s1="good";
string s=s1.Substring(0,1);
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js实现ReplaceAll全部替换 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...加 Stirng对象的原型方法:
String.prototype.replaceAll = function(s1,s2){
return this.replace(new RegExp(s1,"gm"),s2);
}
这样就可以像使用replace 方法一样使用replaceAll了
str.replaceAll("word","newWord");
总结一下， 三种方式
1. str.replace(/oldString/...
Set TextView text from html-formatted string resource in XML
...to call setText(Html.fromHtml(...)) again. I'm rather surprised that this approach is not part of the API.
This solution works to the degree that the Android studio simulator will display the text as rendered HTML.
res/values/strings.xml (the string resource as HTML)
<resources>
<stri...
'str' object does not support item assignment in Python
...g and put it into
other string.
Then use a string slice:
>>> s1 = 'Hello world!!'
>>> s2 = s1[6:12]
>>> print s2
world!
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What is the iBeacon Bluetooth Profile
I'd like to create my own iBeacon with some Bluetooth Low Energy dev kits. Apple has yet to release a specification for iBeacons, however, a few hardware developers have reverse Engineered the iBeacon from the AirLocate Sample code and started selling iBeacon dev kits.
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XXX.cc:100: error: ‘::strerror’ has not been declared - C/C++ - 清泛网 - 专注C/C++及内核技术
XXX.cc:100: error: ‘::strerror’ has not been declared#include <string.h>解决。#include <string.h> 解决。strerror