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Preview an image before it is uploaded
...lt);
}
reader.readAsDataURL(input.files[0]); // convert to base64 string
}
}
$("#imgInp").change(function() {
readURL(this);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form runat="server">
<input ...
Socket send函数和recv函数详解以及利用select()函数来进行指定时间的阻塞 ...
...刻返回。如果这个调用使得一些系统资源用完，那么它将失败并返回 一个错误代码。高质量的MPI实现应保证这种情况只在“病态”时发生。即，一个MPI实现将能支持大数量挂起非阻塞操作。
当数据已被从发送缓存拷出时，...
Java 理论与实践: 线程池与工作队列 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...使用 wait() 和 notify() 方法，这两个方法都难于使用。如果编码不正确，那么可能丢失通知，导致线程保持空闲状态，尽管队列中有工作要处理。使用这些方法时，必须格外小心；即便是专家也可能在它们上面出错。而最好使用现...
Shell script to send email [duplicate]
...JECT} | file -bi - | cut -d"=" -f2)
SUB_B64=$(echo ${SUBJECT} | uuencode --base64 - | tail -n+2 | head -n+1)
NB_FILES=$(echo ${FILES} | wc -w)
NB=0
cat <<EOF | /usr/sbin/sendmail -t
From: ${FROM}
To: ${TO}
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary=frontier
Subject: =?${SUB_CHA...
Store JSON object in data attribute in HTML jQuery
...oring serialized data can be solved by converting the serialized string to base64.
A base64 string can be accepted just about anywhere with no fuss.
Take a look at:
btoa()
The WindowOrWorkerGlobalScope.btoa() method creates a base-64 encoded
ASCII string from a String object in which e...
Favicon not showing up in Google Chrome [duplicate]
...est you to still have the normal favicon. This has solved my issue on IE.
Base64 approach
Found another solution for this which works great! I simply added my favicon as Base64 Encoded Image directly inside the tag like this:
<link href="data:image/x-icon;base64,AAABAAIAEBAAAAEAIABoBAAAJgAAAC...
How many double numbers are there between 0.0 and 1.0?
...the possible values (for any "normal" floating point representation of any base and exponent vs fraction lengths) lie between 0.0 and 1.0 (another quarter between 1.0 and infinity, and the remaining half on the negative half of the real axis). Essentially, half the values of the exponent (with a no...
python numpy machine epsilon
...er is aware about Python running on computers that aren't using underlying base-3 computation.
– kokociel
Jul 24 '18 at 8:02
|
show 1 more c...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...
this is bash script part based on previous answers, which redirect log file during execution of an open process, it is used as postscript in logrotate process
#!/bin/bash
pid=$(cat /var/run/app/app.pid)
logFile="/var/log/app.log"
reloadLog()
{
...
How do I install cygwin components from the command line?
... upgrade all installed packages at once (as apt-get upgrade does on Debian based Linux).
Example use:
setup-x86_64.exe -q --packages=bash,vim
You can create an alias for easier use, for example:
alias cyg-get="/cygdrive/d/path/to/cygwin/setup-x86_64.exe -q -P"
Then you can, for example, instal...