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How to request a random row in SQL?
... -1 for relying on order by rand() or equivalents in all dbs :|. also mentioned here.
– AD7six
May 26 '14 at 9:27
21
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In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
... creeping into the shell (once you dot source a function file, try calling one of the variables from a function in the shell, and you'll see what I mean).
So first, rename the .ps1 file that has all your functions in it to MyFunctions.psm1 (you've just created a module!). Now for a module to load p...
Maven in Eclipse: step by step installation [closed]
...hnology/m2e/releases"
or
http://download.eclipse.org/technology/m2e/milestones/1.0
Now click OK
After that installation would be started.
Way 2: Another way to install Maven plug-in for Eclipse by "Eclipse Marketplace":
Open Eclipse
Go to Help -> Eclipse Marketplace
Search by Maven
Click "I...
Matplotlib (pyplot) savefig outputs blank image
...
First, what happens when T0 is not None? I would test that, then I would adjust the values I pass to plt.subplot(); maybe try values 131, 132, and 133, or values that depend whether or not T0 exists.
Second, after plt.show() is called, a new figure is created....
How to index into a dictionary?
... In Python 2, use d.iterkeys().next() instead of d.keys()[0] to inspect one of the keys without removing it. If the dictionary is huge, it will make a big difference in terms of performance. The same goes for values and items. In Python 2.7 you can also use dict view objects
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Check if all elements in a list are identical
...:
return True
return all(first == rest for rest in iterator)
One-liner:
def checkEqual2(iterator):
return len(set(iterator)) <= 1
Also one-liner:
def checkEqual3(lst):
return lst[1:] == lst[:-1]
The difference between the 3 versions are that:
In checkEqual2 the content...
How to check if a string contains a substring in Bash
...l! You can only omit the double quotes in the first argument to [[. See ideone.com/ZSy1gZ
– nyuszika7h
Jun 11 '14 at 17:53
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Plot smooth line with PyPlot
... will not work if the T is not sorted. And also if the functiton(T) is not one-to-one.
– Rahat Zaman
Feb 22 '19 at 1:23
...
How to force use of overflow menu on devices with menu button
...enu items that don't fit into the ActionBar go into the overflow menu (the one that is reached from the Action Bar not the menu button) even on devices that do have a Menu button . This seems much more intuitive for users than throwing them into a separate menu list that requires the user to jump ...
What makes Lisp macros so special?
Reading Paul Graham's essays on programming languages one would think that Lisp macros are the only way to go. As a busy developer, working on other platforms, I have not had the privilege of using Lisp macros. As someone who wants to understand the buzz, please explain what makes this feature s...