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Test if remote TCP port is open from a shell script
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on Mac at least, you may need to add -G# to set a connection timeout separate from/in addition to the -w# timeout, which basically functions as a read timeout.
– Doktor J
Aug 30 '17 at 18:46
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Add subdomain to localhost URL
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Align inline-block DIVs to top of container element
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Because the vertical-align is set at baseline as default.
Use vertical-align:top instead:
.small{
display: inline-block;
width: 40%;
height: 30%;
border: 1px black solid;
background: aliceblue;
vertical-align:top;
}
http://j...
Using global variables in a function
...s global within each function that assigns a value to it:
globvar = 0
def set_globvar_to_one():
global globvar # Needed to modify global copy of globvar
globvar = 1
def print_globvar():
print(globvar) # No need for global declaration to read value of globvar
set_globvar_to_one(...
How to check whether a string contains a substring in JavaScript?
Usually I would expect a String.contains() method, but there doesn't seem to be one.
3 Answers
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Python: Select subset from list based on index set
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SparseArray vs HashMap
...t;K, V> forNull;
int size;
int modCount;
int threshold;
Set<K> keys
Set<Entry<K, V>> entries;
Collection<V> values;
}
Class = 12 + 8 * 4 = 48 bytes
Entry = 32 + 16 + 16 = 64 bytes
Array = 20 + 1000 * 64 = 64024 bytes
Total = 64,136 bytes
Source: ...
Why do we declare Loggers static final?
In Java, why is it best practice to declare a logger static final ?
14 Answers
14
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简单谈谈软件配置管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
简单谈谈软件配置管理一、概述 配置管理（Configuration Management， CM）的目的，在使用配置识别、配置控制、配置状态记录及配置审计，来达到建立与维护 一、概述
配置管理（Configuration Management， CM）的目的，在使用配置...
Does .NET have a way to check if List a contains all items in List b?
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