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How to efficiently count the number of keys/properties of an object in JavaScript?
...).length worked best for me, because my return object is sometimes a plain string with no properties within it. _.size(obj) gives me back the length of the string, while _.keys(obj).length returns 0.
– Jacob Stamm
Nov 23 '15 at 23:02
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Using multiple delimiters in awk
...ors, with | : ex: awk -F 'this|that|[=/]' '......' (usefull to have words/strings separating things) (note that this keeps the spaces in the fiels between 2 separators. Adding also |[ \t]+ can be useful, but can make things tricky ... as there are often spaces before and after 'this', this will ma...
difference between width auto and width 100 percent
...rders.
width: 100%; will make the element as wide as the parent container. Extra spacing will be added to the element's size without regards to the parent. This typically causes problems.
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Set every cell in matrix to 0 if that row or column contains a 0
... using the final row/column to store that information, so I was stuck with extra memory for a pair of Nx1 arrays.
– Dave Sherohman
Dec 8 '08 at 15:44
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How to send a “multipart/form-data” with requests in python?
... and additional headers for each part by using a tuple instead of a single string or bytes object. The tuple is expected to contain between 2 and 4 elements; the filename, the content, optionally a content type, and an optional dictionary of further headers.
I'd use the tuple form with None as the ...
How do I flush the cin buffer?
...implest, is to use std::getline() for example:
std::getline(std::cin, yourString);
... that will discard the input stream when it gets to a new-line. Read more about this function here.
Another option that directly discards the stream is this...
#include <limits>
// Possibly some other co...
Is there a way to pass jvm args via command line to maven? [duplicate]
..._OPTS="-Xms256m -Xmx512m". This environment variable can be used to supply extra options to Maven.
In Win, you need to set environment variable via the dialogue box
Add ... environment variable by opening up the system properties (WinKey + Pause),... In the same dialog, add the MAVEN_OPTS env...
【解决】模拟器启动失败：ERROR: x86_64 emulation currently requires har...
...，路径：
....\resources\app.asar.unpacked\Emulator\from-Android-SDK\extras\intel\Hardware_Accelerated_Execution_Manager
在线版下载后的目录是：Emulator\from-Android-SDK\extras\intel\Hardware_Accelerated_Execution_Manager
安装：haxm-7.6.5-setup.exe
如果报错，请参考...
jquery stop child triggering parent event
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Or, rather than having an extra event handler to prevent another handler, you can use the Event Object argument passed to your click event handler to determine whether a child was clicked. target will be the clicked element and currentTarget will be t...
How to hide reference counts in VS2013?
...f I wanted to know what references the member -- I too like not having any extra information crammed into my code, like extra white-space.
In short, uncheck Codelens...
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