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Trending in Stackoverflow

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Date: 2017-10-17

  1. Convert Linq Query Result to Dictionary

    tags: c#, linq, linq-to-sql, todictionary

    229 votes, 4 answers and 210236 views

    \r\n I want to add some rows to a database using Linq to SQL, but I want to make a "custom check" before adding the rows to know if I must add, replace or ignore the incomming rows.\nI'd like to keep the ...\r\n

  2. Convert array to JSON

    tags: javascript, jquery, json, arrays

    274 votes, 6 answers and 705989 views

    \r\n I have an Array (var cars = []) which holds a few integers.\nI've added a few values to the array, but I now need to send this array to a page via jQuery's .get method. How can I convert it to a JSON ...\r\n

  3. Why does parseInt yield NaN with Array#map?

    tags: javascript

    205 votes, 7 answers and 27135 views

    \r\n From the Mozilla Developer Network:\n\n[1,4,9].map(Math.sqrt)\r\nwill yield:\n\n[1,2,3]\r\nWhy then does this:\n\n['1','2','3'].map(parseInt)\r\nyield this:\n\n[1, NaN, NaN]\r\nI have tested in Firefox 3.0.1 and ...\r\n

  4. Using cURL with a username and password?

    tags: curl, credentials

    238 votes, 10 answers and 347709 views

    \r\n I want to access a URL which requires a username/password. I'd like to try accessing it with curl. Right now I'm doing something like:\n\ncurl http://api.somesite.com/test/blah?something=123\r\nI get an ...\r\n

  5. Why does this code, written backwards, print “Hello World!”

    tags:

    223 votes, 4 answers and 11614 views

    \r\n Here is some code that I found on the Internet:\n\nclass M‮{public static void main(String[]a‭){System.out.print(new char[]\n{'H','e','l','l','o',' ','W','o','r','l','d','!'});}} \r\nThis code prints ...\r\n

  6. How to ignore a property in class if null, using json.net

    tags: c#, json.net

    249 votes, 8 answers and 147430 views

    \r\n I am using Json.NET to serialize a class to JSON.\n\nI have the class like this:\n\nclass Test1\n{\n [JsonProperty("id")]\n public string ID { get; set; }\n [JsonProperty("label")]\n public string ...\r\n

  7. Angular/RxJs When should I unsubscribe from Subscription

    tags: angular, rxjs, angular2-observables

    225 votes, 11 answers and 46996 views

    \r\n What is the best practice for uses Subscription.unsubscribe() in Angular apps?\n\nWhen should I store Subscriptions and call unsubscribe() on destroy event and when can I ignore them. Saving all ...\r\n

  8. Mercurial stuck “waiting for lock”

    tags: mercurial

    239 votes, 11 answers and 64726 views

    \r\n Got a bluescreen in windows while cloning a mercurial repository.\n\nAfter reboot, I now get this message for almost all hg commands:\r\nc:\src>hg commit\nwaiting for lock on repository c:\src\McVrsServer ...\r\n

  9. Passing environment-dependent variables in webpack

    tags: javascript, webpack

    202 votes, 12 answers and 130579 views

    \r\n I'm trying to convert an angular app from gulp to webpack. in gulp I use gulp-preprocess to replace some variables in the html page (e.g. database name) depending on the NODE_ENV. What is the best way ...\r\n

  10. Differences between C++ string == and compare()?

    tags: c++, string

    207 votes, 10 answers and 236438 views

    \r\n I just read some recommendations on using \n\nstd::string s = get_string();\nstd::string t = another_string();\n\nif( !s.compare(t) ) \n{\r\ninstead of \n\nif( s == t )\n{\r\nI'm almost always using the last one ...\r\n