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Split comma-separated strings in a column into separate rows
...me number of strings. i.e. data.table(id= "X21", a = "chr1;chr1;chr1", b="123;133;134",c="234;254;268") becoming data.table(id = c("X21","X21",X21"), a=c("chr1","chr1","chr1"), b=c("123","133","134"), c=c("234","254","268")) ?
– Reilstein
Jan 19 '19 at 1:39
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Python argparse mutual exclusive group
... answered Dec 28 '14 at 10:38
Oz123Oz123
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Calculate business days
I need a method for adding "business days" in PHP. For example, Friday 12/5 + 3 business days = Wednesday 12/10.
36 Answers...
Do I have to guard against SQL injection if I used a dropdown?
... {
// Not Expected
}
Then use mysqli_* if you are using a version of php >= 5.3.0 which you should be, to save your result. If used correctly this will help with sql injection.
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impr...
Adding a directory to the PATH environment variable in Windows
I am trying to add C:\xampp\php to my system PATH environment variable in Windows.
17 Answers
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How can I get the sha1 hash of a string in node.js?
...hing the UTF-8 representation of the string. Other languages (like Python, PHP or PERL...) are hashing the byte string.
We can add binary argument to use the byte string.
const crypto = require("crypto");
function sha1(data) {
return crypto.createHash("sha1").update(data, "binary").digest("hex...
How to handle AccessViolationException
...rogram
{
static void InvokeCse()
{
IntPtr ptr = new IntPtr(123);
System.Runtime.InteropServices.Marshal.StructureToPtr(123, ptr, true);
}
private static void ExecInThisDomain()
{
try
{
var o = new BoundaryLessExecHelper();
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周鸿祎创业以来的“六大战役” 酷派会是最后一战 - 资讯 - 清泛网 - 专注C/...
...有“你死我活”。
周鸿祎是个什么样的人？
对于这个问题，对于没有接触过老周的人来说真的很难回答的好，回答的准确，只能通过度娘、万能的知乎对其了解一二。
员工：来360之前，看过老周很多文章和访谈，和别的大佬...
Best lightweight web server (only static content) for Windows [closed]
...plication server running in Windows – IIS6.0 with Zend Server to execute PHP. I am looking for lightweight static content only web server on this same machine which will relive IIS form handling static content and increase performance.
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X-UA-Compatible is set to IE=edge, but it still doesn't stop Compatibility Mode
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PHP: <?php header('X-UA-Compatible: IE=edge'); ?>
– Nux
Apr 11 '13 at 14:21
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