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NSDictionary - Need to check whether dictionary contains key-value pair or not
...ing app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSSingleObjectArrayI objectForKey:]: unrecognized selector sent to instance 0x60000133a1c0'
– Amr Angry
Jan 11 '19 at 16:20
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Using R to download zipped data file, extract, and import data
...on. This example reads a .xls file.
url <-"https://www1.toronto.ca/City_Of_Toronto/Information_Technology/Open_Data/Data_Sets/Assets/Files/fire_stns.zip"
temp <- tempfile()
temp2 <- tempfile()
download.file(url, temp)
unzip(zipfile = temp, exdir = temp2)
data <- read_xls(file.path(tem...
Set environment variables on Mac OS X Lion
When someone says "edit your .plist file" or "your .profile" or ".bash_profile" etc, this just confuses me. I have no idea where these files are, how to create them if I have to do that, etc, and also why there seem to be so many different ones (why? Do they do different things?)
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How to change value of object which is inside an array using JavaScript or jQuery?
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desc: "the write less, do more, JavaScript library",
icon: "jquery_32x32.png"
},
{
value: "jquery-ui",
label: "jQuery UI",
desc: "the official user interface library for jQuery",
icon: "jqueryui_32x32.png"
}];
//find the index of object from array that you want to update
co...
How to print register values in GDB?
...s not show up. Yet I am looking at my code assembly in the IDE where a EXC_BAD_ACCESS signal has been generated with the instruction: test %eax, %eax This is in XCode running gdb. Why is gdb not reporting the eax register?
– NoahR
Oct 20 '11 at 18:45
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Converting an object to a string
...bject to real state from "[object Object]"..
– techie_28
May 18 '16 at 6:08
JSON.stringify is not suitable for all cas...
How to find out how many lines of code there are in an Xcode project?
...loc-1.56.pl' command. If your source code is located in directory 'project_code' You just need to run following command.
– JZ.
Sep 26 '14 at 3:41
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How to search in array of object in mongodb
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Use $elemMatch to find the array of particular object
db.users.findOne({"_id": id},{awards: {$elemMatch: {award:'Turing Award', year:1977}}})
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In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
... A friend of mine made f.cl.ly/items/3b0q1n0o1m142P1P340P/javascript_equality.html - the same graphs as above, but a bit easier to read.
– Lucy Bain
Dec 17 '14 at 22:50
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Disabling Minimize & Maximize On WinForm?
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If you want to ever actually close the form, make a class-wide boolean _close and, in your handler, set e.Cancel to !_close, so that whenever the user clicks the X on the window, it doesn't close, but you can still close it (without just killing it) with close = true; this.Close();
(And just to...