大约有 20,000 项符合查询结果（耗时：0.0174秒） [XML]
How to delete duplicates on a MySQL table?
...e, without making a new table
ALTER IGNORE TABLE `table_name` ADD UNIQUE (title, SID)
note: only works well if index fits in memory
share
|
improve this answer
|
follow
...
SVG get text element width
I'm working on some ECMAScript/JavaScript for an SVG file and need to get the width and height of a text element so I can resize a rectangle that surrounds it. In HTML I would be able to use the offsetWidth and offsetHeight attributes on the element but it appears that those properties are...
Is there a way to get colored text in Github Flavored Markdown? [duplicate]
...'],
providers: [ MovieService ]
})
export class AppComponent {
title = 'app works!';
}
```
No "pre" or "code" tags needed.
This is now covered in the GitHub Markdown documentation (about half way down the page, there's an example using Ruby). GitHub uses Linguist to identify and ...
adding x and y axis labels in ggplot2
...
scale_size_area() +
xlab("My x label") +
ylab("My y label") +
ggtitle("Weighted Scatterplot of Watershed Area vs. Discharge and Nitrogen Levels (PPM)")
ggplot(ex1221, aes(Discharge, Area)) +
geom_point(aes(size=NO3)) +
scale_size_area("Nitrogen") +
scale_x_continuous("My x lab...
How can I find the current OS in Python? [duplicate]
....uname(),
platform.version(),
platform.mac_ver(),
))
The outputs of this script ran on a few different systems (Linux, Windows, Solaris, MacOS) and architectures (x86, x64, Itanium, power pc, sparc) is available here: https://github.com/hpcugent/easybuild/wiki/OS_flavor_name_version
e.g. Solaris ...
How to detect page zoom level in all modern browsers?
...iv id=dummyElement>Dummy element to test media queries.</div>
<script>
var mediaQueryMatches = function(property, r) {
var style = document.getElementById('binarysearch');
var dummyElement = document.getElementById('dummyElement');
style.sheet.insertRule('@media (' + property + ...
How to make UIButton's text alignment center? Using IB
I can't set the title of UIButton using IB as center. My title is multi line. It is giving like this one
15 Answers
...
Checking if output of a command contains a certain string in a shell script
I'm writing a shell script, and I'm trying to check if the output of a command contains a certain string. I'm thinking I probably have to use grep, but I'm not sure how. Does anyone know?
...
Process all arguments except the first one (in a bash script)
I have a simple script where the first argument is reserved for the filename, and all other optional arguments should be passed to other parts of the script.
...
How do I make this file.sh executable via double click?
...h files are opened in a text editor (Xcode or TextEdit). To create a shell script that will execute in Terminal when you open it, name it with the “command” extension, e.g., file.command. By default, these are sent to Terminal, which will execute the file as a shell script.
You will also need t...