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Can I grep only the first n lines of a file?
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awk '{ if ( NR <= 10 ) { if(index($0,"ab") > 0) { print $0; } } else { exit; } }' textfile -- faster.
– user982733
Jan 7 '12 at 3:07
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How to suppress “unused parameter” warnings in C?
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I usually write a macro like this:
#define UNUSED(x) (void)(x)
You can use this macro for all your unused parameters. (Note that this works on any compiler.)
For example:
void f(int x) {
UNUSED(x);
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}
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Does python have an equivalent to Java Class.forName()?
...takes a fully qualified class name and returns the class, however you have all the pieces needed to build that, and you can connect them together.
One bit of advice though: don't try to program in Java style when you're in python.
If you can explain what is it that you're trying to do, maybe we ca...
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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Is it valid to replace http:// with // in a ?
... we test our sites in Firefox, Safari, IE6, IE7 and Opera. These browsers all understand that URL format.
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Javascript: How to loop through ALL DOM elements on a page?
... nice, but how can I select an element in the upper method? I only got the index 'i'?
– Florian Müller
Nov 23 '10 at 13:35
2
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How to get sp_executesql result into a variable?
...lah'
SSMS will show this
Msg 2727, Level 11, State 1, Line 1
Cannot find index 'NonExistantStaticsName'.
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Standard way to embed version into python package?
...is also used in lots of 3rd-party modules, so it's the quasi-standard.
Usually, __version__ is a string, but sometimes it's also a float or tuple.
Edit: as mentioned by S.Lott (Thank you!), PEP 8 says it explicitly:
Module Level Dunder Names
Module level "dunders" (i.e. names with two lea...
Asking the user for input until they give a valid response
...logic.
while True:
data = input("Please enter a loud message (must be all caps): ")
if not data.isupper():
print("Sorry, your response was not loud enough.")
continue
else:
#we're happy with the value given.
#we're ready to exit the loop.
break
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Format date and time in a Windows batch script
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All this can be done in just 2 lines using ordinary string replacement: stackoverflow.com/a/23558738/1879699
– Andreas
Apr 22 '16 at 9:34
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