大约有 48,000 项符合查询结果（耗时：0.0313秒） [XML]
Error on pod install
I have a working project the uses a pod file for some weeks now. When I learned that some of my pods have update I tried to 'pod install' on got this weird error
...
What is causing this ActiveRecord::ReadOnlyRecord error?
... answered. I actually discovered I could remove a join from that query, so now the working query is
6 Answers
...
Keystore change passwords
... currently have a keystore, with a particular password that only I should know. I now need to give access to that keystore to someone else, so I would like to either:
...
Case-insensitive search in Rails model
...ot's comment does not apply to strings from user input. "#$$" is a little-known shortcut for escaping global variables with Ruby string interpolation. It's equivalent to "#{$$}". But string interpolation doesn't happen to user-input strings. Try these in Irb to see the difference: "$##" and '$##'. T...
Eclipse - no Java (JRE) / (JDK) … no virtual machine
...eo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error:
34 Answers
...
What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
...ge which opens a connection with the server.
The server and the client can now send each other messages when new data (on either side) is available.
Real-time traffic from the server to the client and from the client to the server
You'll want to use a server that has an event loop
With WebSockets ...
Efficient SQL test query or validation query that will work across all (or most) databases
...g_table WHERE 1=0
or
SELECT 1 FROM INFORMATION_SCHEMA.SYSTEM_USERS
or
CALL NOW()
HSQLDB (tested with version 1.8.0.10)
Note: I tried using a WHERE 1=0 clause on the second query, but it didn't work as a value for Apache Commons DBCP's validationQuery, since the query doesn't return any rows
VAL...
Update Git submodule to latest commit on origin
...git submodule init
# Time passes, submodule upstream is updated
# and you now want to update
# Change to the submodule directory
cd submodule_dir
# Checkout desired branch
git checkout master
# Update
git pull
# Get back to your project root
cd ..
# Now the submodules are in the state you want...
Ruby: How to post a file via HTTP as multipart/form-data?
...
I take that back, file uploads now work. Problem I'm having now is the server gives a 302 and the rest-client follows the RFC (which no browser does) and throws an exception (since browsers are supposed to warn about this behavior). THe other alternative i...
How to work offline with TFS
Our TFS server has some temporary connectivity issues right now, and as such VS has gone unresponsive, leaving 50+ developers unable to work!
...