大约有 19,029 项符合查询结果（耗时：0.0243秒） [XML]
boundingRectWithSize for NSAttributedString returning wrong size
...exity of the attributed string I was assigning. It was coming from an RTF file and used a variety of fonts, line spacing, even shadows, and despite using UsesLineFragmentOrigin and UsesFontLeading I could never get a result that was sufficiently tall, and the problem was worst the longer the attrib...
How to install a specific version of a ruby gem?
...he root system
user which will clear out your environment as well as any files it
creates are not able to be modified by your user and will result in
strange things happening.
share
|
improve...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...会受其影响：
Shell 进程 1
ulimit – s 100
cat testFile > newFile
File size limit exceeded
Shell 进程 2
cat testFile > newFile
ls – s newFile
323669 newFile
那么，是否有针对某个具体用户的资源加以限制的方法呢？答案是有...
Invalid URI: The format of the URI could not be determined
...ve a relative Uri path to append to it, e.g.
string relativePath = "sites/files/images/picture.png"
When creating a Uri from these two I get the "format could not be determined" exception unless I use the constructor with the UriKind argument, i.e.
// this works, because the protocol is included...
How can I pretty-print JSON using node.js?
... It can be a string or a number (number of spaces). Node can write to your filesystem with fs. Example:
var fs = require('fs');
fs.writeFile('test.json', JSON.stringify({ a:1, b:2, c:3 }, null, 4));
/* test.json:
{
"a": 1,
"b": 2,
"c": 3,
}
*/
See the JSON.stringify() docs at MDN...
Difference between object and class in Scala
...
use the same name for both class and object
put them in the same source file.
To create a program you should use main method in object, not in class.
object Hello {
def main(args: Array[String]) {
println("Hello, World!")
}
}
You also may use it as you use singleton object in java.
...
Exception.Message vs Exception.ToString()
...
I'd say @Wim is right. You should use ToString() for logfiles - assuming a technical audience - and Message, if at all, to display to the user. One could argue that even that is not suitable for a user, for every exception type and occurance out there (think of ArgumentExceptions...
#pragma pack effect
...mportant for example if you require a structure to conform to a particular file or communications format where the data you need the data to be at specific positions within a sequence. However such usage does not deal with endian-ness issues, so although used, it may not be portable.
It may also t...
Difference between const & const volatile
...ardware-related register (since these are usually handled in a separate .h file), consider:
An embedded processor which has both volatile read-write data memory (RAM) and non-volatile read-only data memory, for example FLASH memory in von-Neumann architecture, where data and program space share a c...
How to recover a dropped stash in Git?
...objects | sed -e 's#.git/objects/##' | grep / | tr -d /`; do if [ `git cat-file -t $ref` = "commit" ]; then git show --summary $ref; fi; done | less
This lists all the objects in the .git/objects tree, locates the ones that are of type commit, then shows a summary of each one. From this point it w...