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What is the argument for printf that formats a long?
...ently, when I'm printing 64-bit values, I find it helpful to print them in hex (usually with numbers that big, they are pointers or bit fields).
unsigned long long n;
printf("0x%016llX", n); // "0x" followed by "0-padded", "16 char wide", "long long", "HEX with 0-9A-F"
will print:
0x00000000DEAD...
Inserting a tab character into text using C#
... a horizontal tab.
\v for a vertical tab.
\uxxxx for a unicode character hex value (e.g. \u0020).
\x is the same as \u, but you don't need leading zeroes (e.g. \x20).
\Uxxxxxxxx for a unicode character hex value (longer form needed for generating surrogates).
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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...有优先级的：比如说个人消息优先级高，全局消息优先级低。此时可以使用ZSET来实现，它里面分数的概念很自然的实现了优先级。
不过ZSET没有原生的POP操作，所以我们需要模拟实现，代码如下：
<?php
class RedisClient extends Re...
How to zero pad a sequence of integers in bash so that all have the same width?
...
This helped me generate hex characters list. for (( i = 0; i <= 0xffffffff; i++ )) do printf "%08x\n" $i ; done >> hex.txt produced a 8 character hexadecimal list. Thanks.
– cde
Jan 25 '14 at 22:32
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Fastest way to determine if an integer's square root is an integer
...quare root routine. For example, look at the last digit of your number in hex by doing a bit-wise "and." Perfect squares can only end in 0, 1, 4, or 9 in base 16, So for 75% of your inputs (assuming they are uniformly distributed) you can avoid a call to the square root in exchange for some very ...
手握利器，直面“蓝脸”! ——使用WinDbg抗击系统崩溃 - 操作系统(内核) - ...
...、数据安全与完整，为了将您的损失在第一时间减小至最低，Windows于是忍痛做出了自我牺牲……
三、怎样给出“蓝脸”？
当系统检测到引发崩溃的致命错误时，Windows自己执行崩溃函数“KeBugCheckEx”。该函数接受一个停止...
Is there “0b” or something similar to represent a binary number in Javascript
I know that 0x is a prefix for hexadecimal numbers in Javascript. For example, 0xFF stands for the number 255.
10 Answe...
How to change line color in EditText
...
@ASN opacity is added in hex color i the first two characters 00-FF so for instance: #A1FAFAFA
– aimiliano
Sep 18 '18 at 14:03
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All falsey values in JavaScript
... values in JavaScript
false
Zero of Number type: 0 and also -0, 0.0, and hex form 0x0 (thanks RBT)
Zero of BigInt type: 0n and -0n (new in 2020, thanks GetMeARemoteJob)
"", '' and `` - strings of length 0
null
undefined
NaN
document.all (in HTML browsers only)
This is a weird one. document.all ...
What is the >>>= operator in C?
...gt;>= a[ !!0X.1P1 ] )
The literal 0xFULL is the same as 0xF (which is hex for 15); the ULL just specifies that it's an unsigned long long literal. In any case, as a boolean it's true, so 0xFULL ? '\0' : -1 evaluates to '\0', which is a character literal whose numerical value is simply 0.
Mean...