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Why can't I use the 'await' operator within the body of a lock statement?
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I assume this is either difficult or impossible for the compiler team to implement for some reason.
No, it is not at all difficult or impossible to implement -- the fact that you implemented it yourself is a testament to that fact. Rather, it is an incredibly bad idea an...
Editing Javascript using Chrome Developer Tools
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For others that search for this topic: I had prettify set to OFF but still couldn't edit. Turning it ON and OFF again helped. (Thanks to IT Crowd for that advice ;) )
– Drkawashima
Oct 2...
How to create a hex dump of file containing only the hex characters without spaces in bash?
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Format strings can make hexdump behave exactly as you want it to (no whitespace at all, byte by byte):
hexdump -ve '1/1 "%.2x"'
1/1 means "each format is applied once and takes one byte", and "%.2x" is the actual format st...
How to check if a variable exists in a FreeMarker template?
I have a Freemarker template which contains a bunch of placeholders for which values are supplied when the template is processed. I want to conditionally include part of the template if the userName variable is supplied, something like:
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Why should I not wrap every block in “try”-“catch”?
... Actually try blocks are free in any modern C compiler, that information is dated Nick. I also disagree about having a top-level exception handler because you lose locality information (the actual place where the instruction failed).
– Blindy
Apr 29...
How do I specify the platform for MSBuild?
I am trying to use MSBuild to build a solution with a specified target platform (I need both binaries, x86 and x64). This is how I tried it:
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What does functools.wraps do?
...asking this question so that there will be a record of it on StackOverflow for future reference: what does functools.wraps do, exactly?
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What's the point of 'meta viewport user-scalable=no' in the Google Maps API
...ot sure about any interaction with your plugin, but that's what it's there for.
More recently, as @ehfeng notes in his answer, Chrome for Android (and perhaps others) have taken advantage of the fact that there's no native browser zooming on pages with a viewport tag set like that. This allows them...
pandas read_csv and filter columns with usecols
...mes rather than integer indices.
usecols is supposed to provide a filter before reading the whole DataFrame into memory; if used properly, there should never be a need to delete columns after reading.
This solution corrects those oddities:
import pandas as pd
from StringIO import StringIO
csv = ...
How to create a colored 1x1 UIImage on the iPhone dynamically?
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You can use CGContextSetFillColorWithColor and CGContextFillRect for this:
Swift
extension UIImage {
class func image(with color: UIColor) -> UIImage {
let rect = CGRectMake(0.0, 0.0, 1.0, 1.0)
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphics...