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What's the bad magic number error?
...ctory. Say if you create a new directory in django for seperating the unit tests into multiple files and place them in one directory then you also have to create the __init__.py file beside all the other files in new created test directory. otherwise it can give error like
Traceback (most recent ca...
detach all packages while working in R
...,sep=""),detach,character.only=TRUE,unload=TRUE)
(edit: 6-28-19)
In the latest version of R 3.6.0 please use instead.
invisible(lapply(paste0('package:', names(sessionInfo()$otherPkgs)), detach, character.only=TRUE, unload=TRUE))
Note the use of invisible(*) is not necessary but can be useful to p...
Check Whether a User Exists
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this will return 1 if you have a username, let's say "test1" and want to create a new username called "test".
– Marin Nedea
May 22 '18 at 20:08
2
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Is there a Java reflection utility to do a deep comparison of two objects?
I'm trying to write unit tests for a variety of clone() operations inside a large project and I'm wondering if there is an existing class somewhere that is capable of taking two objects of the same type, doing a deep comparison, and saying if they're identical or not?
...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...测试清单
// 自动化测试流程
procedure runAutomatedTests
do
set TestResults to create list
// 测试1: 连接测试
call Test_Connection TestResults
// 测试2: 消息发布测试
call Test_Publish TestResults
// 测试3: 消息订阅测试
call ...
Javascript calculate the day of the year (1 - 366)
...r. The above solution is better and is faster. Here is a variation of it I tested on jsPerf jsperf.com/date-getdayofyear-perf
– Shyam Habarakada
Dec 11 '14 at 18:39
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What is “String args[]”? parameter in main method Java
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The following answer is based my understanding & some test.
What is String[] args?
Ans- >
String[] -> As We know this is a simple String array.
args -> is the name of an array it can be anything (e.g. a, ar, argument, param, parameter) no issues with compiler &a...
How to evaluate http response codes from bash/shell script?
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I haven't tested this on a 500 code, but it works on others like 200, 302 and 404.
response=$(curl --write-out '%{http_code}' --silent --output /dev/null servername)
Note, format provided for --write-out should be quoted.
As suggested...
Regex Named Groups in Java
...and Matching Strings with Balanced Parentheses slide)
Example:
String:
"TEST 123"
RegExp:
"(?<login>\\w+) (?<id>\\d+)"
Access
matcher.group(1) ==> TEST
matcher.group("login") ==> TEST
matcher.name(1) ==> login
Replace
matcher.replaceAll("aaaaa_$1_sssss_$2____") ==>...
Replace values in list using Python [duplicate]
...
This might help...
test_list = [5, 8]
test_list[0] = None
print test_list
#prints [None, 8]
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