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Does Typescript support the ?. operator? (And, what's it called?)
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It's announced for TypeScript 3.7.0 (github.com/microsoft/TypeScript/issues/…)
– c_froehlich
Oct 20 '19 at 9:05
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Add timestamps to an existing table
...erences
t.remove_belongs_to
t.remove_index
t.remove_timestamps
end
http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/Table.html
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How to make input type= file Should accept only pdf and xls
...fy the magic number
// for JPG is 0xFF 0xD8 0xFF 0xE0 (see https://en.wikipedia.org/wiki/List_of_file_signatures)
if(int32View.length>4 && int32View[0]==0xFF && int32View[1]==0xD8 && int32View[2]==0xFF && int32View[3]==0xE0) {
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npm ERR cb() never called
...npm versions are:
$ node -v
v0.10.0
$ npm -v
1.2.14
https://docs.npmjs.com/cli/cache
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Android - Pulling SQlite database android device
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A common way to achieve what you desire is to use the ADB pull command.
Another way I prefer in most cases is to copy the database by code to SD card:
try {
File sd = Environment.getExternalStorageDirectory();
if (sd...
is there an virtual environment for node.js?
...kages is your main issue, then maybe consider using the very cool 'bundle' command with npm. This is closer to freezing gems or using bundler in rails, rather than rvm.
It's super easy. Just create a package.json file:
{ "name": "yourapp", "version": "0.0.1", "dependencies": {"jade": "0.4.1"}}
a...
CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
CoInitialize浅析一大家都知道程序中若要使用COM组件则必须要先调用CoInitialize，该函数主要是用来初始化COM运行环境。但这个函数的作用域是以线程为单位还是 大家都知道程序中若要使用COM组件则必须要先调用CoInitialize，该函数...
How to convert a SVG to a PNG with ImageMagick?
...ly:
$ convert -version
Version: ImageMagick 6.8.9-8 Q16 x86_64 2014-12-17 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC Modules
Delegates: bzlib cairo fontconfig freetype jng jpeg lcms ltdl lzma png rsvg tiff xml zlib
It should display rsvg.
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How to calculate the number of days between two dates? [duplicate]
... it so to make it easy to understand.
You'll find a running example here: http://jsfiddle.net/matKX/
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Passing additional variables from command line to make
...d here which is included in the GNU Make book by Stallman and McGrath (see http://www.chemie.fu-berlin.de/chemnet/use/info/make/make_7.html). It provides the example:
archive.a: ...
ifneq (,$(findstring t,$(MAKEFLAGS)))
+touch archive.a
+ranlib -t archive.a
else
ranlib archi...