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Get started with Latex on Linux [closed]
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First you'll need to Install it:
If you're using a distro which packages LaTeX (almost all will do) then look for texlive or tetex. TeX Live is the newer of the two, and is replacing tetex on most distributions now.
If you're using Debian or Ubunt...
Converting a UNIX Timestamp to Formatted Date String
...es is via the native DateTime class. To get the current time you can just call
$currentTime = new DateTime();
To create a DateTime object from a specific timestamp (i.e. not now)
$currentTime = DateTime::createFromFormat( 'U', $timestamp );
To get a formatted string you can then call
$formatt...
What is “lifting” in Haskell?
...ill now refute me by showing how lifts are a category or something).
Typically you have some data type with a parameter. Something like
data Foo a = Foo { ...stuff here ...}
Suppose you find that a lot of uses of Foo take numeric types (Int, Double etc) and you keep having to write code that un...
Static methods in Python?
Is it possible to have static methods in Python which I could call without initializing a class, like:
10 Answers
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Remove columns from dataframe where ALL values are NA
I'm having trouble with a data frame and couldn't really resolve that issue myself:
The dataframe has arbitrary properties as columns and each row represents one data set .
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UISegmentedControl below UINavigationbar in iOS 7
How do I make a UISegmentedControl as a part of an UINavigationBar below it? Is it connected to the UINavigationBar or is it a complete separate view just added as a subview to the UINavigationController 's view controller. Looks like it is part of the UINavigationBar since there is a shado...
Remove secure warnings (_CRT_SECURE_NO_WARNINGS) from projects by default in Visual Studio
Is there a way to set by default for all projects removing the precompiler secure warnings that come up when using functions like scanf(). I found that you can do it by adding a line in the project option or a #define _CRT_SECURE_NO_WARNINGS in the beginning of the code.
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Convert one date format into another in PHP
...he y-m-d-h-i-s format.
PHP 5.3 and up
Use DateTime::createFromFormat. It allows you to specify an exact mask - using the date() syntax - to parse incoming string dates with.
PHP 5.2 and lower
You will have to parse the elements (year, month, day, hour, minute, second) manually using substr() and...
Get string character by index - Java
...???????????";
Iterate of chars
The first solution is a simple loop over all char of the string:
/* 1 */
System.out.println(
"\n\nUsing char iterator (do not work for surrogate pairs !)");
for (int pos = 0; pos < str.length(); ++pos) {
char c = str.charAt(pos);
System.out.print...
format statement in a string resource file
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Here is a list of all of the different convertors, you'll have to choose the appropriate one for the number type, you may need %f (for floating point): docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html
– Loca...