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Delete terminal history in Linux [closed]
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If you use bash, then the terminal history is saved in a file called .bash_history. Delete it, and history will be gone.
However, for MySQL the better approach is not to enter the password in the command line. If you just specify the -p option, without a value, then you will be prompte...
Log.INFO vs. Log.DEBUG [closed]
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• Debug: fine-grained statements concerning program state, typically
used for debugging;
• Info: informational statements concerning program state,
representing program events or behavior tracking;
• Warn: statements that describe potentially harmful events or stat...
Iterating over a numpy array
...onverting to an array and looping. If you know you have an array, you can call the .coords attribute of the flat iterator.
a = X.flat
%timeit list([(a.coords, x) for x in a.flat])
1 loop, best of 3: 305 ms per loop
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Javascript. Assign array values to multiple variables? [duplicate]
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This is a new feature of JavaScript 1.7 called Destructuring assignment:
Destructuring assignment makes it possible to extract data from arrays or objects using a syntax that mirrors the construction of array and object literals.
The object and array liter...
How can I extract all values from a dictionary in Python?
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Call the values() method on the dict.
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Check if file exists but prevent 404 error in console from showing up [duplicate]
...: No. Can't avoid getting a 404 error in the console unless you kick off a call to a server-side script to check file existence.
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How to auto-scroll to end of div when data is added? [duplicate]
...t every couple of seconds. If you are controlling when data is added, just call the internal of the following function after the data has been added.
window.setInterval(function() {
var elem = document.getElementById('data');
elem.scrollTop = elem.scrollHeight;
}, 5000);
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Integer.valueOf() vs. Integer.parseInt() [duplicate]
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@ateiob that is called a "digit group separator" or often a "thousands separator".
– corsiKa
Sep 8 '11 at 22:16
2
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Why don't :before and :after pseudo elements work with `img` elements? [duplicate]
...minology has shifted since that HTML3 link (!). In HTML5, an img is what's called a "void" element. Examples of void elements include hr, input, and source. See: dev.w3.org/html5/markup/syntax.html#void-element // A quick bit of informal testing suggests that you can't add pseudo-elements to input e...
Can I change a column from NOT NULL to NULL without dropping it?
... more (which should have earned him the accepted answer, but that's not my call).
– PrinceTyke
May 23 '18 at 15:04
@Pr...