大约有 15,100 项符合查询结果（耗时：0.0371秒） [XML]
What's the difference between Unicode and UTF-8? [duplicate]
...else to store it in binary and get it back.
– sliders_alpha
Sep 15 '15 at 11:23
4
UTF-8 encoding ...
SQL selecting rows by most recent date
...ecent date".
Modified from http://wiki.lessthandot.com/index.php/Returning_The_Maximum_Value_For_A_Row
SELECT t.chargeId, t.chargeType, t.serviceMonth FROM(
SELECT chargeId,MAX(serviceMonth) AS serviceMonth
FROM invoice
GROUP BY chargeId) x
JOIN invoice t ON x.chargeId =t.chargeI...
How can I switch my git repository to a particular commit
...anch (locally):
With the commit hash (or part of it)
git checkout -b new_branch 6e559cb
or to go back 4 commits from HEAD
git checkout -b new_branch HEAD~4
Once your new branch is created (locally), you might want to replicate this change on a remote of the same name: How can I push my chang...
Get position of UIView in respect to its superview's superview
...s you are interested in, you could do this:
static func getConvertedPoint(_ targetView: UIView, baseView: UIView)->CGPoint{
var pnt = targetView.frame.origin
if nil == targetView.superview{
return pnt
}
var superView = targetView.superview
while superView != baseView{...
How can I manipulate the strip text of facet_grid plots?
...ulating not the plot title but the text that appears in facet titles (strip_h).
3 Answers
...
Change R default library path using .libPaths in Rprofile.site fails to work
...ry/Frameworks/R.framework/Versions/2.15/Resources/library"
[2] "/Users/user_name/userLibrary"
The .libPaths function is a bit different than most other nongraphics functions. It works via side-effect. The functions Sys.getenv and Sys.setenv that report and alter the R environment variables have ...
Equation for testing if a point is inside a circle
If you have a circle with center (center_x, center_y) and radius radius , how do you test if a given point with coordinates (x, y) is inside the circle?
...
Does Python have a package/module management system?
... manager until 2014.
Until Pip, the de facto standard was a command easy_install. It was woefully inadequate. The was no command to uninstall packages.
Pip was a massive improvement. It had most the features of Ruby's Gem. Unfortunately, Pip was--until recently--ironically difficult to install. ...
How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
...very last lines of corresponding manual page (faqs.org/docs/bashman/bashref_56.html) which I didn't read to the end.
– Tianyi Cui
Aug 18 '10 at 22:22
...
Simplest way to profile a PHP script
...
The PECL APD extension is used as follows:
<?php
apd_set_pprof_trace();
//rest of the script
?>
After, parse the generated file using pprofp.
Example output:
Trace for /home/dan/testapd.php
Total Elapsed Time = 0.00
Total System Time = 0.00
Total User Time = 0.00
...