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Logical operators (“and”, “or”) in DOS batch
...
You can do and with nested conditions:
if %age% geq 2 (
if %age% leq 12 (
set class=child
)
)
or:
if %age% geq 2 if %age% leq 12 set class=child
You can do or with a separate variable:
set res=F
if %hour% leq 6 se...
How to get browser width using JavaScript code?
...elevant portion is found on line 37 of dimensions.js. Here it is extracted and modified to work standalone:
function getWidth() {
return Math.max(
document.body.scrollWidth,
document.documentElement.scrollWidth,
document.body.offsetWidth,
document.documentElement.offsetWi...
Heroku 'Permission denied (publickey) fatal: Could not read from remote repository' woes
...be generated if you don't have one alredy, in my case I alredy had the key and just needed to add the key to heroku
– joseramonc
Dec 3 '14 at 16:19
4
...
Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted (CodeIgniter + XML-RPC)
...ion. Please don't do that.
Your PHP code may have a memory leak somewhere and you are telling the server to just use all the memory that it wants. You wouldn't have fixed the problem at all. If you monitor your server, you will see that it is now probably using up most of the RAM and even swapping...
What is CMake equivalent of 'configure --prefix=DIR && make all install '?
....cmake
Finally, you can specify the install prefix at configure-time, and then build and install in one step as follows:
$ cd build
$ cmake -DCMAKE_INSTALL_PREFIX:PATH=/path/to/install /path/to/src
$ cmake --build . --target install
You would either add --config Release to the third command ...
Implementing MVC with Windows Forms
...
I am of the view that applications are so different from each other and our understanding of how applications should be written is still very limited. Past Windows Forms applications I have worked on have been so different from each other. Some of the design differences I have seen are (incl...
“Default Activity Not Found” on Android Studio upgrade
...
If you see that error occur after upgrading versions of IntelliJ IDEA or Android Studio, or after Generating a new APK, you may need to refresh the IDE's cache.
File -> Invalidate Caches / Restart...
share
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Can I export a variable to the environment from a bash script without sourcing it?
...to have the script, rather than setting an environment variable, print commands that will set the environment variable:
$ cat set-vars2.sh
#!/bin/bash
echo export FOO=BAR
$ eval "$(./set-vars2.sh)"
$ echo "$FOO"
BAR
A third approach is to have a script that sets your environment variable(s) inter...
Unicode Processing in C++
... mundane tasks like string length, capitalization status, etc. Never use standard library builtins like is_alpha unless that is the definition you want.
I can't say it enough: never iterate over the indices of a string if you care about correctness, always use your unicode library for this.
...
What is “String args[]”? parameter in main method Java
...
In Java args contains the supplied command-line arguments as an array of String objects.
In other words, if you run your program as java MyProgram one two then args will contain ["one", "two"].
If you wanted to output the contents of args, you can just loop thro...