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How do I check if file exists in Makefile so I can delete it?
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Helps to also understand what $(wildcard pattern) actually does. See link.
– Dr. Dan
Nov 5 '18 at 22:43
1
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Check for array not empty: any?
...something or not. This includes things that evaluate to false, such as nil and false.
>> a = []
=> []
>> a.empty?
=> true
>> a = [nil, false]
=> [nil, false]
>> a.empty?
=> false
>> a = [nil]
=> [nil]
>> a.empty?
=> false
The method any? comes ...
How to make code wait while calling asynchronous calls like Ajax [duplicate]
...me propreitory framework..there is load function where page starts loading and before page loads i need to get data and only function i can override is load function...
– thecodejack
Dec 26 '12 at 8:15
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How to find if an array contains a specific string in JavaScript/jQuery? [duplicate]
...ork for IE < 9 ? I believe I've run into this feature as missing in IE7 and IE8, but did not actually test; instead I relied on developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Michael Paulukonis
Jun 19 '13 at 18:21
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How can I use Google's Roboto font on a website?
I want to use Google's Roboto font on my website and I am following this tutorial:
13 Answers
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Ember.js or Backbone.js for Restful backend [closed]
... will keep the application open for long periods of time, perhaps all day, and interactions with the application's views or underlying data trigger deep changes in the view hierarchy. Ember is larger than Backbone, but thanks to Expires, Cache-Control this only matters on the the first load. After t...
Why does C++ not have reflection?
This is a somewhat bizarre question. My objectives are to understand the language design decision and to identify the possibilities of reflection in C++.
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Matplotlib make tick labels font size smaller
...overflow.com/a/11386056/42346
The code below is for illustrative purposes and may not necessarily be optimized.
import matplotlib.pyplot as plt
import numpy as np
def xticklabels_example():
fig = plt.figure()
x = np.arange(20)
y1 = np.cos(x)
y2 = (x**2)
y3 = (x**3)
yn = ...
How do I undo a checkout in git?
...to/file
For the entire repository working copy:
git reset --hard HEAD
And if that doesn't work, then you can look in the reflog to find your old head SHA and reset to that:
git reflog
git reset --hard <sha from reflog>
HEAD is a name that always points to the latest commit in your curr...
Remove excess whitespace from within a string
...tring from a database query, then I remove all HTML tags, carriage returns and newlines before I put it in a CSV file. Only thing is, I can't find a way to remove the excess white space from between the strings.
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