大约有 49,000 项符合查询结果（耗时：0.0775秒） [XML]
Should I use px or rem value units in my CSS? [closed]
...
TL;DR: use px.
The Facts
First, it's extremely important to know that per spec, the CSS px unit does not equal one physical display pixel. This has always been true – even in the 1996 CSS 1 spec.
CSS defines the reference pixel, which measures the size of a pixel on a 96 dpi displa...
generate model using user:references vs user_id:integer
...
how does rails know that user_id is a foreign key referencing user?
Rails itself does not know that user_id is a foreign key referencing user. In the first command rails generate model Micropost user_id:integer it only adds a column user_i...
How do I measure separate CPU core usage for a process?
... following...
1) Rename the binary
ln -s /usr/bin/top top2
./top2
Now .top2rc is going to be written to your $HOME
2) Set $HOME to some alternative path, since it will write its config file to the $HOME/.binary-name.rc file
HOME=./
top
Now .toprc is going to be written to the current fo...
Comparison between Corona, Phonegap, Titanium
...l. From architectural standpoint, these two frameworks are very similar.
Now, are they any different? Yes. First, Titanium appears to be more feature rich than PhoneGap by bridging more mobile phone functions to javascript. Most noticeably, PhoneGap does not expose many (if any) native UI componen...
Simplest two-way encryption using PHP
... guys, just FYI => MCRYPT IS DEPRECATED. capsing so everyone should know not to use it as it gave us a myriad of issues. It deprecated since PHP 7.1 if i'm not mistaken.
– clusterBuddy
Jun 3 '19 at 10:29
...
Android: Tabs at the BOTTOM
...ust watch the content of the FrameLayout(@id/tabcontent), because I don't know how it will handle in case of scrolling... In my case it works because I used ListView as the content of my tabs. :)
Hope it helps.
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.a...
GitHub clone from pull request?
...fetch origin pull/2/head
git checkout -b pullrequest FETCH_HEAD
You will now be on a new branch that is on the state of the pull request.
You might want to set up an alias by running
git config --global alias.pro '!f() { git fetch -fu ${2:-origin} refs/pull/$1/head:pr/$1 && git checkout ...
MySQL vs MongoDB 1000 reads
..., with many indexes needed to ensure relational integrity between tables.
Now consider the same design with a document store. If all of those related tables are subordinate to the main table (and they often are), then you might be able to model the data such that the entire entity is stored in a si...
Root user/sudo equivalent in Cygwin?
...ith the following content:
#!/usr/bin/bash
cygstart --action=runas "$@"
Now make the file executable:
$ chmod +x ~/bin/sudo
Now you can run commands with real elevated privileges:
$ sudo elevatedCommand
You may need to add ~/bin to your path. You can run the following command on the Cygwin ...
How can I undo git reset --hard HEAD~1?
...0 deletions(-)
create mode 100644 file2
$ git reset --hard HEAD^
HEAD is now at 1a75c1d... added file1
$ cat file2
cat: file2: No such file or directory
$ git reflog
1a75c1d... HEAD@{0}: reset --hard HEAD^: updating HEAD
f6e5064... HEAD@{1}: commit: added file2
$ git reset --hard f6e5064
HEAD i...