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Best way to check if a Data Table has a null value in it
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You can (now) use table.AsEnumerable() instead of table.Rows.OfType<DataRow>()
– Teejay
Dec 14 '16 at 16:08
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What's the difference between '$(this)' and 'this'?
...u get a set of elements back jQuery turns it into a jQuery object. If you know you only have one result, it's going to be in the first element.
$("#myDiv")[0] === document.getElementById("myDiv");
And so on...
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css - position div to bottom of containing div
...ne isn't defined it will use the body." You just explained so much for me! Now I really start to understand CSS. THANK YOU!
– Simon Forsberg
Apr 28 '14 at 21:22
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Sending images using Http Post
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I'm going to assume that you know the path and filename of the image that you want to upload. Add this string to your NameValuePair using image as the key-name.
Sending images can be done using the HttpComponents libraries. Download the latest HttpClient...
Using Phonegap for Native Application development [closed]
...rom Android to Iphone with some effort. Before I plunge into it I want to know what is forum's experience with Phonegap. What are the pain points and is it really scalable for enterprise level application development.
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Check if a value is within a range of numbers
...ow good it answers the question. That's because I generally assume people know what they are asking for. The checkmark shows me this wasn't the case with this questioner.
– Leif
Jun 23 '11 at 13:16
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How to Store Historical Data
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We are using the same aproach.But now I am wondering is it better to store only START_DATETIME and don't store END_DATETIME
– bat_ventzi
May 27 '15 at 7:40
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How do I obtain the frequencies of each value in an FFT?
...aking a look at FFT stuff and I remembered your answer and just visited it now. Once I got here, I remembered to thank you... so thank you! Whenever I have a debate with someone on interpreting what the each point on the horizontal axis of the FFT is, I just point them to this link.
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How do I efficiently iterate over each entry in a Java Map?
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To summarize the other answers and combine them with what I know, I found 10 main ways to do this (see below). Also, I wrote some performance tests (see results below). For example, if we want to find the sum of all of the keys and values of a map, we can write:
Using iterator and Ma...
How to access the ith column of a NumPy multidimensional array?
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[3, 4],
[5, 6]])
As you already know from other answers, to get it in the form of "row vector" (array of shape (3,)), you use slicing:
arr_c1_ref = arr[:, 1] # creates a reference to the 1st column of the arr
arr_c1_copy = arr[:, 1].copy() # creates a cop...