replace

【WP8】线程安全的StorageHelper

杀马特。学长 韩版系。学妹 提交于 2020-01-23 14:31:40
14-08-29 12:32更新:修复StorageHelper部分bug WP8以后提供了StorageFile的方式访问文件,StorageFile对文件的操作只提供了异步的支持,包括WP8.1 RT也没有对同步读写文件的支持,可以看出异步在移动开发中的重要性,而且Win8也是通过StorageFile进行文件操作的 跟WP7上的IsolatedStorageFile相比,StorageFile使用起来并不方便,最近总结了一些资料,写了一个通用的类库 StorageFile默认是线程不安全的,如果多个线程同时对文件进行读写会抛出异常,例如多图的场景比较常见 让StorageFile使用起来更加方便,同时提供了 线程安全 的异步操作,同时也对IsolatedStorageFile(Silverlight)进行了封装 一、StorageFile要点:   StorageFile     1、访问文件(两种方式) //访问安装目录下的test.txt文件,如果不存在,会抛出FileNotFoundException异常 //1、访问当前目录下的文件 var folder = Package.Current.InstalledLocation; var storageFile = await folder.GetFileAsync("test.txt"); //2、通过Uri访问文件

Java String Replace '&' with & but not & to &

浪子不回头ぞ 提交于 2020-01-23 04:35:09
问题 I have a large String in which I have & characters used available in following patterns - A&B A & B A& B A &B A&B A & B A& B A &B I want to replace all the occurrences of & character to & While replacing this, I also need to make sure that I do not mistakenly convert an & to & . How do I do that in a performance savvy way? Do I use regular expression? If yes, please can you help me to pickup the right regular expression to do the above? I've tried following so far with no joy: data = data

题解 CF920F 【SUM and REPLACE】

最后都变了- 提交于 2020-01-22 23:08:26
可以事先打表观察每个数的约数个数,观察到如果进行替换,若干次后这个数便会被替换成1。 所以我们可以直接暴力的进行区间修改,若这个数已经到达1或2,则以后就不再修改,用并查集和树状数组进行维护。 这个方法用了 P2391 白雪皑皑 的思想处理,用并查集标记该点已经不再用替换。 code: #include<bits/stdc++.h> #include<cctype> #define maxn 300010 #define lowbit(x) (x&(-x)) typedef long long ll; using namespace std; ll n,m; ll fa[maxn],k,l,r; ll a[maxn],tree[maxn*4]; ll d[1000010]; template<typename T> inline void read(T &x) { x=0;char c=getchar();bool flag=false; while(!isdigit(c)){if(c=='-')flag=true;c=getchar();} while(isdigit(c)){x=x*10+(c^48);c=getchar();} if(flag)x=-x; } int find(int x) { return fa[x]==x?x:fa[x]=find(fa[x]); }

How can I speed this loop up? Is there a class for replacing multiple terms at at time?

时光总嘲笑我的痴心妄想 提交于 2020-01-22 19:50:27
问题 The loop: var pattern = _dict[key]; string before; do { before = pattern; foreach (var pair in _dict) if (key != pair.Key) pattern = pattern.Replace(string.Concat("{", pair.Key, "}"), string.Concat("(", pair.Value, ")")); } while (pattern != before); return pattern; It just does a repeated find-and-replace on a bunch of keys. The dictionary is just <string,string> . I can see 2 improvements to this. Every time we do pattern.Replace it searches from the beginning of the string again. It would

Batch replace text inside text file (Linux/OSX Commandline)

*爱你&永不变心* 提交于 2020-01-22 10:02:13
问题 I have hundreds of files where I need to change a portion of its text. For example, I want to replace every instance of "http://" with "rtmp://" . The files have the .txt extention and are spread across several folders and subfolder. I basically am looking for a way/script that goes trough every single folder/subfolder and every single file and if it finds inside that file the occurrence of "http" to replace it with "rtmp". 回答1: You can do this with a combination of find and sed : find .

Notepad++ and regex with removal of unmatching sections

做~自己de王妃 提交于 2020-01-22 03:05:24
问题 I'm using this regex string I've crafted... ['"]{1}\w+@\w+\.{1}\w\w\w?['"] To hunt for email addresses contained in quotes in an old badly formatted legacy file. Example: ADF325@#%jkdaf-@#%j-afd(#$w52'leroyjenkins@myguild.edu'@#%kladfjkla-235dsaf-'thisemail@example.com'2l35jk2dz-dl1jkozf-afajelj'gooselick@somebodyspastries.co'l2#%Jk23l5jlafafljewo8972509357 j2k3l5jadfjeljwfoobar'foobar@barfoo.foo'jk23j-zv8902354jlfa ('352lj53k2ljkumquat'fakeemail@realemail.wtf')lajflsdf etc. The regex is

Django导入静态文件

懵懂的女人 提交于 2020-01-22 02:55:49
setting.py: 'DIRS': [os.path. join(BASE_DIR, 'templates'), os.path. join(BASE_DIR, 'static').replace( '\\', '/')], STATIC_ROOT = os.path.join(BASE_DIR, 'static'). replace( '\\', '/') STATICFILES_DIRS = ( ( 'css', os.path. join(STATIC_ROOT, 'css'). replace( '\\', '/')),             ( 'images', os.path. join(STATIC_ROOT, 'images'). replace( '\\', '/')),             ( 'fonts', os.path. join(STATIC_ROOT, 'fonts'). replace( '\\', '/')),             ( 'js', os.path. join(STATIC_ROOT, 'js'). replace( '\\', '/')), ) html: <link href= "/static/css/style.css" rel= "stylesheet" type= "text/css" media=

How to make a REGEX statement that will allow interpretation of EU and US decimal notations

北城以北 提交于 2020-01-21 19:00:41
问题 I have been working on a tough question and gotten a lot of help from programmers and developers on this site. Many thanks to those who contribute. You are invaluable. Using Javascript and HTML. I am a newbie. The current condition of my problem is this... I am attempting to develop a metric to english conversion website that takes a numeric value in a HTML textbox (no form): I want the user to have multiple ways of entering the data into the conversion tool as it will be used internationally

How to make a REGEX statement that will allow interpretation of EU and US decimal notations

流过昼夜 提交于 2020-01-21 19:00:12
问题 I have been working on a tough question and gotten a lot of help from programmers and developers on this site. Many thanks to those who contribute. You are invaluable. Using Javascript and HTML. I am a newbie. The current condition of my problem is this... I am attempting to develop a metric to english conversion website that takes a numeric value in a HTML textbox (no form): I want the user to have multiple ways of entering the data into the conversion tool as it will be used internationally

How to make a REGEX statement that will allow interpretation of EU and US decimal notations

狂风中的少年 提交于 2020-01-21 19:00:07
问题 I have been working on a tough question and gotten a lot of help from programmers and developers on this site. Many thanks to those who contribute. You are invaluable. Using Javascript and HTML. I am a newbie. The current condition of my problem is this... I am attempting to develop a metric to english conversion website that takes a numeric value in a HTML textbox (no form): I want the user to have multiple ways of entering the data into the conversion tool as it will be used internationally