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iOS Detect 3G or WiFi

...TelephonyNetworkInfo *netinfo = [[CTTelephonyNetworkInfo alloc] init]; _carrier = [[netinfo subscriberCellularProvider] carrierName]; if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyGPRS]) { NSLog(@"2G"); } else if ([netinfo.currentRadioAccessTec...
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Changing image size in Markdown

... to resize the image. Do not forget the space before the =. ![](./pic/pic1_50.png =100x20) You can skip the HEIGHT ![](./pic/pic1s.png =250x) share | improve this answer | ...
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defaultdict of defaultdict?

...et as the new value of this key, which means in our case the value of d[Key_doesnt_exist] will be defaultdict(int). If you try to access a key from this last defaultdict i.e. d[Key_doesnt_exist][Key_doesnt_exist] it will return 0, which is the return value of the argument of the last defaultdict i....
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Max parallel http connections in a browser?

...e got few registry settings (MaxConnectionsPerServer and MaxConnectionsPer1_0Server) which control the max connections per server as mentioned in this post : stackoverflow.com/questions/2960056/… – RBT Jun 19 '16 at 2:53 ...
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SQLite: How do I save the result of a query as a CSV file?

...matically. import pandas as pd import sqlite3 conn = sqlite3.connect('your_cool_database.sqlite') df = pd.read_sql('SELECT * from orders', conn) df.to_csv('orders.csv', index = False) You can customize the query to only export part of the sqlite table to the CSV file. You can also run a single co...
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How to set Sqlite3 to be case insensitive when string comparing?

...hen you create an index as well. For example: create table Test ( Text_Value text collate nocase ); insert into Test values ('A'); insert into Test values ('b'); insert into Test values ('C'); create index Test_Text_Value_Index on Test (Text_Value collate nocase); Expressions involving T...
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How to create PDF files in Python [closed]

...th the style and markup you want for you pdf document Executing pdfkit.from_string(...) method by passing the rendered html as parameter This way you get a pdf document with styling and images supported. You can install it as follows : using pip pip install pdfkit You will also need to instal...
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Extract a dplyr tbl column as a vector

...ge:base': #> #> intersect, setdiff, setequal, union db <- src_sqlite(tempfile(), create = TRUE) iris2 <- copy_to(db, iris) vec <- pull(iris2, Species) head(vec) #> [1] "setosa" "setosa" "setosa" "setosa" "setosa" "setosa" ...
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NPM doesn't install module dependencies

...oose "Restore Packages" after doing other steps mentioned here (delete node_modules and package.lock.json, then npm install). – Taersious Mar 19 '18 at 15:56 add a comment ...
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Android SDK on a 64-bit linux machine

...s. Your solution worked for my Linux Mint 13. – pavel_kazlou Sep 20 '12 at 20:55 Agree with commenter above, ubuntu 12...