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How do I connect to a specific Wi-Fi network in Android programmatically?
...epTxKeyIndex = 0;
conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
For WPA network you need to add passphrase like this:
conf.preSharedKey = "\""+ networkPass +"\"";
For Open network you need to do this:
conf.all...
Are loops really faster in reverse?
... a test suite so you can run them yourself.
In all cases (unless I missed one in my read) the fastest loop was:
var i = arr.length; //or 10
while(i--)
{
//...
}
share
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...
How to pass macro definition from “make” command line arguments (-D) to C source code?
...use $(CFLAGS) in your compile command in the Makefile. As @jørgensen mentioned , putting the variable assignment after the make command will override the CFLAGS value already defined the Makefile.
Alternatively you could set -Dvar=42 in another variable than CFLAGS and then reuse this variable in ...
What's the fuss about Haskell? [closed]
... talking about Haskell when they are among themselves, and here on SO everyone seems to love that language. Being good at Haskell seems somewhat like the hallmark of a genius programmer.
...
How to install Java SDK on CentOS?
... After downloading it, try the above command again.
You will see at least one version of Java packages available for download. Depending on when you read this, the lastest available version may be different.
java-1.7.0-openjdk.x86_64
The above package alone will only install JRE. To also install...
How to hash some string with sha256 in Java?
...
SHA-256 isn't an "encoding" - it's a one-way hash.
You'd basically convert the string into bytes (e.g. using text.getBytes(StandardCharsets.UTF_8)) and then hash the bytes. Note that the result of the hash would also be arbitrary binary data, and if you want to...
Difference between sh and bash
...find support it.
Shebang line
Ultimately, it's up to you to decide which one to use, by writing the «shebang» line as the very first line of the script.
E.g.
#!/bin/sh
will use sh (and whatever that happens to point to),
#!/bin/bash
will use /bin/bash if it's available (and fail with an e...
How to parse XML in Bash?
...ion of Yuzem's answer, but I didn't feel like this much editing should be done to someone else, and comments don't allow formatting, so...
rdom () { local IFS=\> ; read -d \< E C ;}
Let's call that "read_dom" instead of "rdom", space it out a bit and use longer variables:
read_dom () {
...
Nested function in C
...le publicly visible function that implements some complex logic by relying one or more nested functions to break the problem into smaller, logical pieces.
They simplify parameter passing in some cases. A nested function has access to all the parameters and some or all of the variables in the scope o...
Validate phone number with JavaScript
...this code in some website, and it works perfectly. It validates that the phone number is in one of these formats:
(123) 456-7890 or 123-456-7890
...