大约有 47,000 项符合查询结果（耗时：0.0611秒） [XML]
Hash and salt passwords in C#
...- which the membership provider does to put them into config files. Hashes and salts are binary blobs, you don't need to convert them to strings unless you want to put them into text files.
In my book, Beginning ASP.NET Security, (oh finally, an excuse to pimp the book) I do the following
static ...
What is the difference between gsub and sub methods for Ruby Strings
I have been perusing the documentation for String today, and I saw the :sub method, which I'd never noticed before. I've been using :gsub and it appears that they are essentially the same. Can anyone explain the difference to me? Thanks!
...
Difference between 'self' and 'total' in Chrome CPU Profile of JS
What is the difference between the 'self' and 'total' columns in the Chrome CPU profiling of JS code?
2 Answers
...
Cleaning `Inf` values from an R dataframe
...x, is.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)
invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA)))
Or using column numbers (possibly faster if th...
dplyr: “Error in n(): function should not be called directly”
...
I presume you have dplyr and plyr loaded in the same session. dplyr is not plyr. ddply is not a function in the dplyr package.
Both dplyr and plyr have the functions summarise/summarize.
Look at the results of conflicts() to see masked objects.
...
Longest line in a file
... the longest line in a file. Ideally, it would be a simple bash shell command instead of a script.
14 Answers
...
leiningen - how to add dependencies for local jars?
I want to use leiningen to build and develop my clojure project. Is there a way to modify project.clj to tell it to pick some jars from local directories?
...
Is it possible to disable floating headers in UITableView with UITableViewStylePlain?
...es'. I'm using the headers of the table view to layout certain images etc. and I'd prefer it if they didn't float but stayed static as they do when the style is set to UITableViewStyleGrouped .
...
Logging framework incompatibility
I'm building a small Java app and hoping to use logback for logging.
3 Answers
3
...
MySQL Fire Trigger for both Insert and Update
Is it possible to fire a mysql trigger for both the insert and update events of a table?
3 Answers
...