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What is the purpose of the word 'self'?
...Vector.length_new = length_global
v = Vector(3, 4)
print(v.length_new()) # 5.0
This works because the first parameter of length_global, can be re-used as the self parameter in length_new. This would not be possible without an explicit self.
Another way of understanding the need for the explicit...
How are cookies passed in the HTTP protocol?
...ge/webp,*/*;q=0.8
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8,ru;q=0.6
Cookie: name=F
...
Table Header Views in StoryBoards
...f you want to set the table header view. I noticed – maybe an Xcode bug (5.0) - that this would only work when I had moved the view out of the regular hierarchy first; I dragged it all the way to the bottom of the outline for that scene. Then, in a 2nd step, I could move it onto the table view.
...
Is it a good idea to index datetime field in mysql?
...ng elimination of rows between conditions: http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
This makes your datetime column an excellent candidate for an index if you are going to be using it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), ...
Why would one declare a Java interface method as abstract?
.../or abstract modifier for a method declared in an interface."
For Java SE 5.0: "For compatibility with older versions of the Java platform, it is permitted but discouraged, as a matter of style, to redundantly specify the abstract modifier for methods declared in interfaces."
...
Is it better to reuse a StringBuilder in a loop?
...mpiler, which automatically creates StringBuilders (StringBuffers pre-J2SE 5.0) when it sees String concatenations, the first example in the question is equivalent to:
for (loop condition) {
String s = "some string";
. . .
s += anotherString;
. . .
passToMethod(s);
}
Which is more reada...
Append column to pandas dataframe
...
#output
dat1 dat2
1 0.0 NaN
2 NaN 4.0
3 1.0 NaN
4 NaN 5.0
5 2.0 NaN
6 NaN 6.0
7 3.0 NaN
8 NaN 7.0
#reset index
dat1 = dat1.reset_index(drop=True)
dat2 = dat2.reset_index(drop=True)
#both 2 ways to get the same result
print(dat1.join(dat2))
dat1 dat2
0 ...
Colspan all columns
...the cell is defined.
However, most browsers never implemented this.
HTML 5.0 (made a candidate recommendation back in 2012), the WhatWG HTML living standard (the dominant standard today), and the latest W3 HTML 5 spec all do not contain the wording quoted from HTML 4 above, and unanimously agree t...
How to make a phone call in android and come back to my activity when the call is done?
...
Using android 5.0 the onActivityResult method is call emmediately the call starts!!
– Panciz
Jun 8 '17 at 1:58
add...
How can I enable zoom in on UIWebView which inside the UIScrollView?
... the Attributes Inspector, set your Max and Min zoom factors (I set 0.5 to 5.0, that works well).
On the Web View, in the Attributes Inspector:
In the Web View section, select Scales Pages To Fit
In the View section, select for Mode, "Top Left"
In the View section at the bottom, check off User Inter...