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How to get current time in milliseconds in PHP?
...
Short answer:
64 bits platforms only!
function milliseconds() {
$mt = explode(' ', microtime());
return ((int)$mt[1]) * 1000 + ((int)round($mt[0] * 1000));
}
[ If you are running 64 bits PHP then the constant PHP_INT_SIZE equals t...
How to Flatten a Multidimensional Array?
... [x] => X
[y] => Y
[p] => P
[q] => Q
)
Update: Based on comment by @MohamedGharib
This will throw an error if the outer array is empty, since array_merge would be called with zero arguments. It can be be avoided by adding an empty array as the first argument.
array_merg...
What is the most efficient string concatenation method in python?
...
64
''.join(sequenceofstrings) is what usually works best -- simplest and fastest.
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How to convert a String into an ArrayList?
... ArrayList in the first place. Very often, you're going to filter the list based on additional criteria, for which a Stream is perfect. You may want a set; you may want to filter them by means of another regular expression, etc. Java 8 provides this very useful extension, by the way, which will wor...
Storing sex (gender) in database
I want to store a user's gender in a database with as little (size/performance) cost as possible.
8 Answers
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How do I get the difference between two Dates in JavaScript?
... to get the difference, just subtract the two dates.
To create a new date based on the difference, just pass the number of milliseconds in the constructor.
var oldBegin = ...
var oldEnd = ...
var newBegin = ...
var newEnd = new Date(newBegin + oldEnd - oldBegin);
This should just work
EDIT: Fi...
PowerShell says “execution of scripts is disabled on this system.”
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If you're using Windows Server 2008 R2 then there is an x64 and x86 version of PowerShell both of which have to have their execution policies set. Did you set the execution policy on both hosts?
As an Administrator, you can set the execution policy by typing this into your PowerSh...
Find provisioning profile in Xcode 5
...m DER -in your-mobileprovision-filename
then cut-and-paste each block of base64 data after the DeveloperCertificates entry into its own file. You can then use:
openssl asn1parse -inform PEM -in file-with-base64
to dump each certificate. The line after the second commonName in the output will be...
Pandas count(distinct) equivalent
...TCODE).ne(0).sum(1)
Out[197]:
YEARMONTH
201301 2
201302 3
dtype: int64
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...har *CExcelOp::GetColumnName(long icolumn)
{
static char column_name[64];
size_t str_len = 0;
while(icolumn > 0)
{
int num_data = icolumn % 26;
icolumn /= 26;
if (num_data == 0)
{
num_data = 26;
icolumn--;
}
column_name[str_len] = (char)((num_data-1) + 'A' );
...