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iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...取电话号码，去掉数字之间的-
NSString *originalString = @"(123)123123abc";
NSMutableString *strippedString = [NSMutableString stringWithCapacity:originalString.length];
NSScanner *scanner = [NSScanner scannerWithString:originalString];
NSCharacterSet *numbers = [NSCharacterSet char...
How should I print types like off_t and size_t?
...es use of it. Nevertheless, it's standardized (by the C99 standard). For those intmax_t and int8_t of stdint.h and so on, there are macros you can use, like another answer said:
printf("value: %" PRId32, some_int32_t);
printf("value: %" PRIu16, some_uint16_t);
They are listed in the manpage of in...
How to sort List of objects by some property
...
123
Using Comparator
For Example:
class Score {
private String name;
private List<In...
How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
...manual page and is a linux command that shows the man page for a command (most linux commands have a man page). try man ls or man man.
– Steve Robillard
Sep 18 '10 at 2:53
8
...
How to handle configuration in Go [closed]
...]
}
Program to read the configuration
import (
"encoding/json"
"os"
"fmt"
)
type Configuration struct {
Users []string
Groups []string
}
file, _ := os.Open("conf.json")
defer file.Close()
decoder := json.NewDecoder(file)
configuration := Configuration{}
err := decoder.D...
How does one reorder columns in a data frame?
...n of this function to my personal package.
– CoderGuy123
Jul 6 '16 at 12:12
1
This is really usef...
How to simulate a mouse click using JavaScript?
...thing like:
simulate(document.getElementById("btn"), "click", { pointerX: 123, pointerY: 321 })
You can use a similar approach to override other default options.
Credits should go to kangax. Here's the original source (prototype.js specific).
...
Remove insignificant trailing zeros from a number?
...
May produce unexpected results for numbers like: 1231111111111111111111111111111222222222222222222222222222222222222222222222222222.00. The string representation will be in exponential format: 1.231111111111111e+81
– Stas Makutin
Feb 2...
What does [ N … M ] mean in C aggregate initializers?
From sys.c line 123:
1 Answer
1
...
How to delete multiple files at once in Bash on Linux?
...f abc.log.2012* # Remove all logs from 2012
$ rm -f abc.log.2012-0[123]* # Remove all files from the first quarter of 2012
Regular expressions are more powerful than wildcards; you can feed the output of grep to rm -f. For example, if some of the file names start with "abc.log" and some wi...