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Is there a unique Android device ID?
...l only work "some" of the time, and unfortunately, that's not good enough.
Based on my tests of devices (all phones, at least one of which is not activated):
All devices tested returned a value for TelephonyManager.getDeviceId()
All GSM devices (all tested with a SIM) returned a value for Telephony...
数据存储组件 · App Inventor 2 中文网
...的摘要（MD5、SHA1、SHA256）、HMAC-SHA256 签名、AES 加解密、Base64 编解码和随机字符串。
调用各家接口时的参数签名、提交前把密码转成摘要、把敏感数据加密后再保存，都用它。
所有方法直接返回结果文本；文本一律按 UTF-8 处...
The simplest way to comma-delimit a list?
.../trunk/src/java/org/… The join method has 9 overloadings. The iteration-based ones are like "Sample solution 3"; the index-based ones use: if (i > startIndex) { <add separator> }
– 13ren
Mar 21 '09 at 11:15
...
How can I pad an int with leading zeros when using cout
... formatting information below.
//
// Print the number "n" in the given "base"
// using exactly "numDigits".
// Print +/- if signed flag "isSigned" is TRUE.
// Use the character specified in "padchar" to pad extra characters.
//
// Examples:
// sprintfNum(pszBuffer, 6, 10, 6, TRUE,...
Who is “us” and who is “them” according to Git?
After a Git rebase, and in other circumstances, you can find some files marked as deleted by us in the git status report. Who is us according to Git and why?
...
Find the nth occurrence of substring in a string
...e most prominent approaches presented so far, namely @bobince's findnth() (based on str.split()) vs. @tgamblin's or @Mark Byers' find_nth() (based on str.find()). I will also compare with a C extension (_find_nth.so) to see how fast we can go. Here is find_nth.py:
def findnth(haystack, needle, n):...
Smallest data URI image possible for a transparent image
...ds (in some browsers).
Shorter (but unstable - 74 bytes)
data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
I would advise using the slightly longer and more stable version as follows:
⇊ Stable ⇊ (but slightly longer - 78 bytes)
data:image/gif;base64,R0lGODlhAQABAI...
App Inventor 2 数学代码块 · App Inventor 2 中文网
...2、12 和 2.12），以及带前缀的其他机制数字，包括：
Base-2（二进制）数字，例如 0b10（等于十进制 2）
Base-8（八进制）数字，例如 0o14（等于十进制 12）
Base-16（十六进制）数字，例如 0xd4（等于十进制 212）
进制数...
What C++ Smart Pointer Implementations are available?
...c garbage collection. Most of my limited understanding and assumptions are based on Herb Sutter's Effective Use of auto_ptr and I do use it regularly although not always in the most optimized way.
C++11
std::unique_ptr - This is our friend who will be replacing std::auto_ptr it will be quite sim...
How to get domain URL and application name?
...ould make this question more sense), then you can make use of the HTML <base> tag:
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<c:set var="req" value="${pageContext.request}" />
<c:s...