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Better way to set distance between flexbox items
...inimal distance between flexbox items I'm using margin: 0 5px on .item and margin: 0 -5px on container. For me it seems like a hack, but I can't find any better way to do this.
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Converting between strings and ArrayBuffers
... technique for efficiently converting JavaScript strings to ArrayBuffers and vice-versa? Specifically, I'd like to be able to write the contents of an ArrayBuffer to localStorage and to read it back.
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Comparing boxed Long values 127 and 128
...s this:
true
false
For the 127L value, since both references (val1 and val2) point to the same object instance in memory (cached), it returns true.
On the other hand, for the 128 value, since there is no instance for it cached in memory, a new one is created for any new assignments for boxe...
How to get cumulative sum
... Col1,
SUM(Col1) OVER(ORDER BY RowId ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS Col2
FROM tablehh
ORDER BY RowId
or
SELECT
GroupID,
RowID,
Col1,
SUM(Col1) OVER(PARTITION BY GroupID ORDER BY RowId ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS Col2
FROM tabl...
“implements Runnable” vs “extends Thread” in Java
...purer" way to go.
In practical terms, it means you can implement Runnable and extend from another class as well.
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How to insert an item into an array at a specific index (JavaScript)?
...t, that is, it's just an insert).
In this example we will create an array and add an element to it into index 2:
var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr....
Visual Studio popup: “the operation could not be completed”
...rSolutionFolder\.vs\YourSolutionName\v15\.suo
The .vs folder is hidden, and the .suo files is a file without name, with just the .suo extension.
Explanation
The .suo file contain various information like the opened files list, and some preferences that are not saved in the solution file ...
Execution of Python code with -m option or not
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When you use the -m command-line flag, Python will import a module or package for you, then run it as a script. When you don't use the -m flag, the file you named is run as just a script.
The distinction is important when you try to run a package. T...
How are Python's Built In Dictionaries Implemented?
...now how the built in dictionary type for python is implemented? My understanding is that it is some sort of hash table, but I haven't been able to find any sort of definitive answer.
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MySQL: #126 - Incorrect key file for table
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Also I have about 2Gb free space and get this error. But my database about 1.7 Gb and database has a table with ~1.5M rows. After cleanup, when free space about 3.5-4Gb, the error disappears.
– Sergey
May 31 '12 at 5:35...