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found problem bnr ios programming book , archiving data, directory did not exist. easy enough fix, using createdirectoryatpath , seems ok - how test again? how can delete directory , re-run? easy enough on simulator, delete in finder, on ipad or iphone? you found createdirectoryatpath in nsfilemanager docs. if keep searching page, you'll find more info on removeitematurl:error: , removeitematpath:error: .

my current asp.net mvc 5 project mandates email address username . want upgrade aspnet identity v1.0 v2.0 leverage new features ( see here ). however, aspnet identity v2.0 adds email separate column users table , adds corresponding property identityuser class. i don't want duplicate username new email column. how can map email property of identityuser use existing username column & property? possible ignore email property , skip adding column in users table? has tried this? please share. update this identity 2.0 limitation. cannot ignore email property or leave null. of identity functionality not work. :( you can try 1 of these: try ignore either overriding email property in user class , unmapping or using fluent api. public class applicationuser : identityuser { // .... [notmapped] public override string email { get; set; } } or protected override void onmodelcreating(dbmodelbuilder modelbuilder) { modelbuilder.entity<a...

i have created task pane app office 2013 in excel. has few buttons , labels. want open file location on pc on clicking of button. please tell me code i'm new java-script. as far know, there no existing openfile api in javascript office, can use ajax call wcf string existing document , use document.setselecteddataasync method write got string document.

i need implement kind of inter-process mutex in java. i'm considering using filelock api recommended in thread . i'll using dummy file , locking in each process. is best approach? or built in standard api (i can't find it). for more details see below: i have written application reads input files , updates database tables according finds in them (it's more complex, business logic irrelevant here). i need ensure mutual exclusion between multiple database updates. tried implement lock table, unsupported engine i'm using. so, want implement locking support in application code. i went filelock api approach , implemented simple mutex based on: filechannel.lock filelock.release all processes use same dummy file acquiring locks.

what im trying compare imageowner (variable returned controller) current user <!-- image remove button --> {% if {{ imageowner }} == {{ app.user.username }} %} //line 5 <p>you owner of image</p> <button onclick="deletestuff()">deleted</button> {% endif %} but throws error a hash key must quoted string, number, name, or expression enclosed in parentheses (unexpected token "punctuation" of value "{" inlayoutbundle:frontpage:content-bubble.html.twig @ line 5 the {{ imageowner }} , {{ app.user.username }} return right values, think syntax or logical error use {% if imageowner == app.user.username %} //line 5 <p>you owner of image</p> <button onclick="deletestuff()">deleted</button> {% endif %} {{ imageowner }} slimier echo $imageowner in php. not need wrap variable {{}} when don't want print it.

i want select row in css without first column. tried this, not working: #testtable tbody tr:not(td:first-child):hover{ /*code*/ } does know answer problem? #testtable tbody tr:hover td:not(:first-child) { /* ... */ } or — if need support older browser, ie8 , ie7 — may write #testtable tbody tr:hover td + td { /* ... */ } this select columns inside tbody except first 1 of each row (when hover row) example: http://codepen.io/anon/pen/aitbr/

so i've messed around bit .net's rsacryptoserviceprovider , bouncy castle able create rsa key pairs , later on x509 certificates. i'm curious if knows if there's difference between these 2 codeblocks, think same thing, pure bouncy castle version takes longer finish. .net bouncy castle: private const int rsakeysize = 4096; public static asymmetriccipherkeypair getkeypairwithdotnet() { using (rsacryptoserviceprovider rsaprovider = new rsacryptoserviceprovider(rsakeysize)) { rsaparameters rsakeyinfo = rsaprovider.exportparameters(true); return dotnetutilities.getrsakeypair(rsakeyinfo); } } pure bouncy castle: private const int rsakeysize = 4096; public static asymmetriccipherkeypair getkeypair() { cryptoapirandomgenerator randomgenerator = new cryptoapirandomgenerator(); securerandom securerandom = new securerandom(randomgenerator); var keygenerationparameters = new keygenerationparameters(securerandom, rsakeysize); var keypa...