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Why does JQuery have dollar signs everywhere?

...Query); // "true" If you don't want to use the alias, you don't have to. And if you want $ to not be an alias for jQuery, you can use noConflict and the library will restore $ to whatever it was before jQuery took it over. (Useful if you also use Prototype or MooTools.) ...
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How to get a value from a cell of a dataframe?

...ith only one row, then access the first (only) row as a Series using iloc, and then the value using the column name: In [3]: sub_df Out[3]: A B 2 -0.133653 -0.030854 In [4]: sub_df.iloc[0] Out[4]: A -0.133653 B -0.030854 Name: 2, dtype: float64 In [5]: sub_df.iloc[0]['A'] Ou...
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How do I check if file exists in Makefile so I can delete it?

... Helps to also understand what $(wildcard pattern) actually does. See link. – Dr. Dan Nov 5 '18 at 22:43 1 ...
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How to convert a private key to an RSA private key?

Let me explain my question first. I bought a certificate from a CA and used the following format to generate the csr and the private key: ...
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Git: updating remote branch information

...r remote_name/branch_name you only remove your local checkout. This command doesn't do anything to the remote repository, which is why it still shows up. Solution: git push origin :branch_name will remove the the remote branch (note the ':'), and git branch -d branch_name will remove your ...
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What does SQL clause “GROUP BY 1” mean?

...t_id. You also can specify in ORDER BY. Note : The number in ORDER BY and GROUP BY always start with 1 not with 0. share | improve this answer | follow |...
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Forward declaration of a typedef in C++

... OP wants to accomplish using your trick above. – j_random_hacker Apr 30 '09 at 7:30 9 But be awa...
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How Do I Use Factory Girl To Generate A Paperclip Attachment?

... to say that the TestProcess include needs to be included with the Factory and not simply in your spec_helper. – Andrew Hubbs Oct 23 '12 at 1:16 2 ...
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How to get a number of random elements from an array?

I am working on 'how to access elements randomly from an array in javascript'. I found many links regarding this. Like: Get random item from JavaScript array ...
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How to write a foreach in SQL Server?

...or-each, where I would like to take the Ids of a returned select statement and use each of them. 10 Answers ...