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How to modify list entries during for loop?
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It's considered poor form. Use a list comprehension instead, with slice assignment if you need to retain existing references to the list.
a = [1, 3, 5]
b = a
a[:] = [x + 2 for x in a]
print(b)
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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
...taining the northwest and southeast coordinates of the current view in the form ((North West) (South East)).设置或获取地图的边界，值是一个包含了西北和东南坐标的嵌套列表，格式为((北西)(南东))CenterFromString地图中心Set the initial center coordinate of the map...
Passing variable number of arguments around
... va_list and use that va_list in your second function. Specifically;
void format_string(char *fmt,va_list argptr, char *formatted_string);
void debug_print(int dbg_lvl, char *fmt, ...)
{
char formatted_string[MAX_FMT_SIZE];
va_list argptr;
va_start(argptr,fmt);
format_string(fmt, argptr...
How to change an element's title attribute using jQuery
I have an form input element and want to change its title attribute. This has to be easy as pie, but for some reason I cannot find how to do this. How is this done, and where and how should I be searching on how to do this?
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Download file of any type in Asp.Net MVC using FileResult?
...tFileFromDisk(string fileName)
{
return File(directoryPath, "multipart/form-data", fileName);
}
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How to insert a newline in front of a pattern?
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In general, for $ followed by a string literal in single quotes bash performs C-style backslash substitution, e.g. $'\t' is translated to a literal tab. Plus, sed wants your newline literal to be escaped with a backslash, hence the \ before $. And finally, the dollar sign itself shouldn't be quot...
C# switch on type [duplicate]
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This should be a very efficient/performant solution. Just note that this won't work with subclasses.
– sparebytes
Sep 10 '13 at 20:04
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A Space between Inline-Block List Items [duplicate]
...you please update your answer so that you aren't giving people incorrect information? A 4px margin is not added to inline-block elements. As Anzeo mentions, it is due to a space being rendered between elements. The word 'margin' has specific meaning in CSS and it can mislead others into not understa...
Check whether an input string contains a number in javascript
...() gives true if the passed value is a finite number and number 5,000 is a formatted string of number not a finite number.
– Starx
Nov 16 '15 at 19:41
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Ignore Typescript Errors “property does not exist on value of type”
...date a broken typings file
are monkey patching
yet, you still want some form of typing.
Say you want to patch the definition of an instance of y of type OrginalDef with a new property x of type number:
const y: OriginalDef = ...
interface DefWithNewProperties extends OriginalDef {
x: numbe...