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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
...being identical, always compare them with .equals() method.
So b2.equals(b3) will print true for all logically equal values of b2,b3.
Note that Integer cache is not there for performance reasons, but rather to conform to the JLS, section 5.1.7; object identity must be given for values -128 to 127 ...
Should I hash the password before sending it to the server side?
...answered Feb 12 '14 at 1:12
user3299591user3299591
1,65422 gold badges99 silver badges33 bronze badges
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Using the “start” command with parameters passed to the started program
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answered Sep 30 '08 at 17:25
Tim FarleyTim Farley
10.7k44 gold badges2727 silver badges3030 bronze badges
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Simple Vim commands you wish you'd known earlier [closed]
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317
I really wish I'd known that you can use CtrlC instead of Esc to switch out of insert mode. Th...
How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
...ly match at that position or earlier. For example:
std::string test = "0123123";
size_t match1 = test.rfind("123"); // returns 4 (rightmost match)
size_t match2 = test.rfind("123", 2); // returns 1 (skipped over later match)
size_t match3 = test.rfind("123", 0); // returns std::string::npos (i.e...
Determining Whether a Directory is Writeable
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edited Apr 9 '19 at 18:33
Nathaniel Jones
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answered...
How can i use iptables on centos 7? [closed]
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333
With RHEL 7 / CentOS 7, firewalld was introduced to manage iptables. IMHO, firewalld is more s...
Python string.replace regular expression [duplicate]
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str.replace() v2|v3 does not recognize regular expressions.
To perform a substitution using a regular expression, use re.sub() v2|v3.
For example:
import re
line = re.sub(
r"(?i)^.*interfaceOpDataFile.*$",
"interfac...
Saving and Reading Bitmaps/Images from Internal memory in Android
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347
Use the below code to save the image to internal directory.
private String saveToInternalStor...
Task vs Thread differences [duplicate]
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answered Nov 17 '12 at 9:03
Jon SkeetJon Skeet
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