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How can I use goto in Javascript?
...lo, world! message to the JavaScript console 538 times, like this:
var i = 0;
[lbl] start:
console.log("Hello, world!");
i++;
if(i < 538) goto start;
You can read more about how goto is implemented, but basically, it does some JavaScript preprocessing that takes advantage of the fact that you ca...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
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Raj AdvaniRaj Advani
3,62022 gold badges1515 silver badges99 bronze badges
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List comprehension: Returning two (or more) items for each item
...>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f = lambda x: x + 2
g = lambda x: x ** 2
def fg(x):
yield f(x)
yield g(x)
print timeit(stmt='list(chain.from_iterable((f(x), g(x)) for x in range(3)))',
...
base64 encoded images in email signatures
...e the image from inline data is:
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA
AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot">
http://en.wikipedia.org/wiki/Data_URI_scheme
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Automatic exit from bash shell script on error [duplicate]
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edited May 16 '19 at 13:09
Louis
3,83033 gold badges3434 silver badges5151 bronze badges
answered May ...
How can I select the first day of a month in SQL?
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30 Answers
30
Active
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UITableView set to static cells. Is it possible to hide some of the cells programmatically?
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You are looking for this solution :
StaticDataTableViewController 2.0
https://github.com/xelvenone/StaticDataTableViewController
which can show/hide/reload any static cell(s) with or without animation!
[self cell:self.outletToMyStaticCell1 setHidden:hide];
[self cell:self.outletToMyStatic...
常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
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#删除文件的几种方法（貌似Git2.0后有了变化）
#第一种直接在工作区删除
rm your_file #直接在工作区删除文件
git add -u . #将有改动的都提交到暂存区（包括修改的，删除的等操作），貌似git2.0 不加 -u 参...
Python: List vs Dict for look up table
I have about 10million values that I need to put in some type of look up table, so I was wondering which would be more efficient a list or dict ?
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