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How to check if an email address exists without sending an email?
...jected, does not mean the user exists. Some server will silently discard requests like this to prevent enumeration of their users. Other servers cannot verify the user and have to accept the message regardless.
There is also an antispam technique called greylisting, which will cause the server to r...
What's the best Django search app? [closed]
... We found that Sphinx was the least resource-intensive and fastest way to index and search our documents and that django-sphinx was a nice wrapper on top of the sphinx client.
The group by aggregation is particularly nice, if for example you want to display how many documents with a certain tag or...
glVertexAttribPointer clarification
...provide a number that specifies your own attribute. You pass this value as index. All your glVertexAttribPointer calls get queued up for the next time you call glDrawArrays or glDrawElements. If you have a VAO bound, the VAO will store the settings for all your attributes.
The main issue here is t...
What is the “-d” in “npm -d install”?
...nse to be under "misc"... Just ask Google if they agree: google.com/search?q=npm+install+-d
– Seb Nilsson
Jan 7 '14 at 10:52
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How can I delete one element from an array by value
... It will remove all occurrences of 3 and has nothing to do with the arrays index or position.
– bkunzi01
Jun 11 '16 at 15:33
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show 4 more c...
Python script to copy text to clipboard [duplicate]
...on?
import pandas as pd
df=pd.DataFrame(['Text to copy'])
df.to_clipboard(index=False,header=False)
I wrote a little wrapper for it that I put in my ipython profile <3
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improve this an...
How to maintain a Unique List in Java?
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A set is not a list, I cannot look up elements by index in a set in O(1) time (random access).
– wilmol
Sep 18 '19 at 1:32
add a comment
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How do I use shell variables in an awk script?
...-v b="$var2" 'BEGIN {print a,b}'
Warning. As Ed Morton writes, escape sequences will be interpreted so \t becomes a real tab and not \t if that is what you search for. Can be solved by using ENVIRON[] or access it via ARGV[]
PS If you like three vertical bar as separator |||, it can't be escaped...
BigDecimal equals() versus compareTo()
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The answer is in the JavaDoc of the equals() method:
Unlike compareTo, this method considers two BigDecimal objects equal only if they are equal in value and scale (thus 2.0 is not equal to 2.00 when compared by this method).
In other words: equals() check...
Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did no
... for(int i = 0 ; i < d.length ; i++) {
int index = d[i];
if(index >= 0 && index < ListViewStressTest.this.adapter.getCount()) {
ListViewStressTest.this.adapter.remove(ListViewStressTest.this.adapter.getItem(ind...