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Xcode + remove all breakpoints

...l breakpoints. In Xcode4 press CMD(⌘)+6, in Xcode3 press CMD(⌘)+ALT+B. Select all breakpoints with CMD(⌘)+A and delete them, like deleting text, with backspace. There's no step 3 :) share | i...
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IntelliJ IDEA: Move line?

... class Click on relevant class (Red color field) and press, Alt + Enter Select valid class as per requirement (8) Hierarchy of method calls Select specific method and press, Ctrl + Alt + H (9) Comment In Code Single Line : Select specific line and press, Ctrl + / Multiple Line : Select...
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Does a “Find in project…” feature exist in Eclipse IDE?

... 1. Ctrl + H 2. Choose File Search for plain text search in workspace/selected projects For specific expression searches, choose the relevant tab (such as Java Search which allows you to search for specific identifiers) For whole project search: 3. Scope (in the form section) > Enclosing...
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How do MySQL indexes work?

...be faster to go through the pages one by one (in a database, this is "poor selectivity"). For a 10-page book, it makes no sense to make an index, as you may end up with a 10-page book prefixed by a 5-page index, which is just silly - just scan the 10 pages and be done with it. The index also needs t...
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View's SELECT contains a subquery in the FROM clause

... As per documentation: MySQL Docs The SELECT statement cannot contain a subquery in the FROM clause. Your workaround would be to create a view for each of your subqueries. Then access those views from within your view view_credit_status ...
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Algorithm for Determining Tic Tac Toe Game Over

...row=n or col=n or diag=n or rdiag=n then winner=true I'd use an array of char [n,n], with O,X and space for empty. simple. One loop. Five simple variables: 4 integers and one boolean. Scales to any size of n. Only checks current piece. No magic. :) ...
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How to have a default option in Angular.js select box

... You can simply use ng-init like this <select ng-init="somethingHere = options[0]" ng-model="somethingHere" ng-options="option.name for option in options"> </select> ...
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System.Net.Http: missing from namespace? (using .net 4.5)

... Add Reference dialog right-click on your project in Solution Explorer and select Add Reference.... It should look something like: share | improve this answer | follow ...
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Fastest way to count exact number of rows in a very large table?

I have come across articles that state that SELECT COUNT(*) FROM TABLE_NAME will be slow when the table has lots of rows and lots of columns. ...
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Extracting specific columns from a data frame

...r package, if your data.frame is called df1: library(dplyr) df1 %>% select(A, B, E) This can also be written without the %>% pipe as: select(df1, A, B, E) share | improve this answer ...