大约有 48,000 项符合查询结果（耗时：0.0722秒） [XML]
How to use mod operator in bash?
...
241
Try the following:
for i in {1..600}; do echo wget http://example.com/search/link$(($i % 5)); ...
Regex to replace everything except numbers and a decimal point
...
241
Use this:
document.getElementById(target).value = newVal.replace(/[^0-9.]/g, "");
...
git-svn: how do I create a new svn branch via git?
...nswer like this:
Copying https://scm-server.com/svn/portal/trunk at r8914 to https://scm-server.com/svn/portal/branches/auth_bug...
And without the -n switch the server probably adds something like:
Found possible branch point: https://scm-server.com/svn/portal/trunk => https://scm-serv...
Disable IPython Exit Confirmation
...
126
If you also want Ctrl-D to exit without confirmation, in IPython 0.11, add c.TerminalInteracti...
Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...ion
User.select(:first,:email).group(:first,:email).having("count(*) > 1")
Also, this is a little unrelated but handy. If you want to see how times each combination was found, put .size at the end:
User.select(:first,:email).group(:first,:email).having("count(*) > 1").size
and you'll get...
What is the _snowman param in Ruby on Rails 3 forms for?
...e is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
2 Answers
...
how to get the current working directory's absolute path from irb
...
521
Dir.pwd seems to do the trick.
http://ruby-doc.org/core/Dir.html#method-c-pwd
...
Easiest way to upgrade eclipse 3.7 to 4.2 (Juno)
...
157
Eclipse can barely update from 3.7.1 to 3.7.2, never mind from 3.7 to 4.2.
You're taking the ...
Is it possible to assign numeric value to an enum in Java?
...
217
public enum EXIT_CODE {
A(104), B(203);
private int numVal;
EXIT_CODE(int numVal)...
I want to exception handle 'list index out of range.'
...
Handling the exception is the way to go:
try:
gotdata = dlist[1]
except IndexError:
gotdata = 'null'
Of course you could also check the len() of dlist; but handling the exception is more intuitive.
share
...