大约有 16,000 项符合查询结果（耗时：0.0447秒） [XML]
Which Java Collection should I use?
...d for this answer and is licensed under a Creative Commons Attribution 4.0 International License. The simplest attribution is by linking to either this question or this answer.
Other resources
Probably the most useful other reference is the following page from the oracle documentation which descri...
json.net has key method?
...ing explicit interface implementation, so you can't use them without first converting to IDictionary<string, JToken> though.
share
|
improve this answer
|
follow
...
How to programmatically display version/build number of target in iOS app?
...9, 1.11.23 is a reasonable version number.
The build number is mostly the internal number of builds that have been made until then. But some use other numbers like the branch number of the repository or its commit number. This number should be unique to distinguish the different builds, which only ...
Aggregate / summarize multiple variables per group (e.g. sum, mean)
...[, lapply(.SD, sum), by=.(year, month), .SDcols=c("x1","x2")]
setDF(df2) # convert back to dataframe
Using the plyr package
require(plyr)
df2 <- ddply(df1, c("year", "month"), function(x) colSums(x[c("x1", "x2")]))
Using summarize() from the Hmisc package
(column headings are messy in my ex...
Java - escape string to prevent SQL injection
...e the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is evaluated by MySQL SQL injections will be blocked.
...
Sending multipart/formdata with jQuery.ajax
...ust leave the processData flag set to false, otherwise, jQuery will try to convert your FormData into a string, which will fail.
You may now retrieve the file in PHP using:
$_FILES['file-0']
(There is only one file, file-0, unless you specified the multiple attribute on your file input, in which...
Any reason to write the “private” keyword in C#?
... everywhere in C# (meaning that if I don't write public , protected , internal , etc. it will be private by default). (Please correct me if I am wrong.)
...
How can I round to whole numbers in JavaScript?
...
Use the Math.round() function to round the result to the nearest integer.
share
|
improve this answer
|
follow
|
...
What is the use of the pipe symbol in YAML?
...dicates that multi-line "folded" scalar follows, meaning that newlines are converted to spaces. For example:
>>> import yaml
>>> yaml.load("""
... |
... This is a multi-line
... literal style scalar.
... """)
'This is a multi-line\nliteral style scalar.\n'
>>> yaml.loa...
How to change href of tag on button click through javascript
...
no href makes it an anchor, click converts to a link, pretty normal
– Free Consulting
Dec 6 '10 at 12:07
add a comment
...