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How do I add a placeholder on a CharField in Django?

... Look at the widgets documentation. Basically it would look like: q = forms.CharField(label='search', widget=forms.TextInput(attrs={'placeholder': 'Search'})) More writing, yes, but the separation allows for better abstraction of more complic...
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tinyxml XML解析库下载(tinyxml2.h 和 tinyxml2.cpp) - 源码下载 - 清泛...

...> # include <cstdarg> #endif /* TODO: intern strings instead of allocation. */ /* gcc: g++ -Wall -DDEBUG tinyxml2.cpp xmltest.cpp -o gccxmltest.exe Formatting, Artistic Style: AStyle.exe --style=1tbs --indent-switches --break-closing-brackets --indent-preproce...
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How do I get the result of a command in a variable in windows?

... If you have to capture all the command output you can use a batch like this: @ECHO OFF IF NOT "%1"=="" GOTO ADDV SET VAR= FOR /F %%I IN ('DIR *.TXT /B /O:D') DO CALL %0 %%I SET VAR GOTO END :ADDV SET VAR=%VAR%!%1 :END All output lines are stor...
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How to make a chain of function decorators?

...her object scream = shout # Notice we don't use parentheses: we are not calling the function, # we are putting the function "shout" into the variable "scream". # It means you can then call "shout" from "scream": print(scream()) # outputs : 'Yes!' # More than that, it means you can remove the old...
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What are the minimum margins most printers can handle?

... is only a safe bet on inkjets made for photo printing. Laser printers usually have a much larger margin. However, the question states that they're producing graphics, so optimizing for inkjets might be OK. – Kevin Vermeer Aug 19 '10 at 2:04 ...
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Store JSON object in data attribute in HTML jQuery

...in the text just use $('#myElement').data('key',jsonObject); it won't actually be stored in the html, but if you're using jquery.data, all that is abstracted anyway. To get the JSON back don't parse it, just call: var getBackMyJSON = $('#myElement').data('key'); If you are getting [Object Objec...
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What do commas and spaces in multiple classes mean in CSS?

..._12 .grid_6, .container_16 .grid_8 { width: 460px; } That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same: &lt;div class="container_12"&gt; &lt;div class="grid_6"&gt;460px Wide&lt;/div&g...
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Why can't I overload constructors in PHP?

I have abandoned all hope of ever being able to overload my constructors in PHP, so what I'd really like to know is why . ...
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Defining private module functions in python

...s, a simple #define private public line before #includeing your .h file is all it takes for wily coders to make hash of your "privacy"...!-)) share | improve this answer | fo...
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How to differentiate single click event and double click event?

...t to get "this" under control: playcode.io/492022 – LOstBrOkenKeY Jan 31 at 10:52 add a comment  |  ...